IPMU Annual 2008 .Pdf

Institute for the Physics and Mathematics of the Universe (IPMU) The University of Tokyo 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8568, Japan Tel: +81-4-7136-4940 Fax: +81-4-7136-4941 http://www.ipmu.jp/

K. Abe (chair), M.Nakahata,K.Nomoto, K.Saito, T. Yanagida Institute forthePhysicsandMathematicsofUniverse 5-1-5 Kashiwanoha,Kashiwa,Chiba277-8568,Japan Tel: +81-4-7136-4940Fax: +81-4-7136-4941 Copyright ©IPMU Annual Report2008 Editorial board members The University of Tokyo Print: KOHMURA Inc. http://www.ipmu.jp/ All rightsreserved 09Mr FocusWeek: DeterminationofMassesand SpinsofNewParticlesattheLHC 2009 Mar "ScienceCafe-Universe"(5publiclectures andMarch) in5weeksduringFebruary 2009 Feb ConstructionofNewIPMUBuildingBegan 2009 Jan SiteVisit byJSPSandMEXT 2008 Dec FocusWeek: MessengersofSupernovaExplosions 2008 Nov OneYear ofIPMU:Press Anniversary Conference andReception 2008 Oct FocusWeek: QuantumBlackHole 2008 Sep IUPAP Young ScientistPrizetoNaokiYoshida andEiichiro Komatsu 2008 Aug PublicLecture forKashiwaCitizensatCampus 2008 Jul Focus Week: SecondWorkshop onLHCPhenomenology 2008 Jun FirstWPIFollow-upMeeting 2008 May SiteVisit byJSPSandMEXT 2008 Apr IPMUOpeningSymposiumandReception 2008 Mar Hirosi OoguriWinsInauguralLeonard EisenbudPrize 2008 Jan FocusWeek: LHCPhenomenology 2007 Dec LaunchofIPMUunderWPIProgram ofMEXT 2007 Oct (October 2007-March2009) History ofIPMU at Tama RokutoScienceMuseum Public Lecture atYayoi HallofHongoCampus JSPS PrizetoKunioInoue Inoue SciencePrizetoMasayukiNakahata BoardExternal Advisory Meeting Yukawa-Kimura PrizetoShigekiSugimoto Kamioka SatelliteOffi ceOpens Workshop onMicro-local AnalysisofSymplecticManifolds Moonshiney Conference Asian MathematiciansandTheoretical PhysicistsConference BoardExternal Advisory Meeting Humboldt Research Award toHirosi Ooguri Masahiro Takada WinsASJYoung Astronomer Award Focus Week: NeutrinoMass

IPMU ANNUAL REPORT 2008 3 History of IPMU 1. ■ of theoretical physicsandadvancedmathematics. collaboration close by universe the of theories new pursue will we universe, the of mysteries the to approach experimental multifaceted this to matter.addition dark In the of identity the reveal to example, for experiments, new initiate and universe, the in anti-matter vanished of puzzle the and neutrinos understand better to experiment Super-Kamiokande the utilize fully also will They Bang. Big the of condition the mimic to energies high extremely at protons smashes that Largethe Hadronand (LHC) universe, Collider the of sector dark the “observe” to Japan by built physical theoriestounderstandthem,andcreatenew newmathematicstoformulatethem. build to them, analyze to methods statistical new develop to data, new create to need we mysteries deep such addressTo moment. this at unknown totally directly,is see can’t we therefore and light emit don’t they because “dark” called identity, true energy.Their dark and matter dark called substances of rather but atoms, namely well, know we made matter of kind not the of is universe the of component the of Much years. ten last the in universe the about facts amazing learned have we forefrontexample, of For power science. the using millennia for mysteries oftheuniverse. deep address to structureorganizational new astronomy,a and with physics, experimental and theoretical statistics, mathematics, disciplines, separate traditionally the integrate will institute research new This (MEXT). Technology and Science Sports, Culture, Education, of Ministry the of (WPI) Initiative Center Research International Premier World the of one as 2007, October Figure 1:HitoshiMurayama,IPMU Director The IPMU scientists will advance their research by exploiting the giant Subaru telescope Subaru giant the exploiting by research their advance will scientists IPMU The ponderedhad beings human questions simple addressrather to these is IPMU of aim The Why doweexistatall? What fundamentallawsgovernit? What isitsfate? How diditbegin? What istheuniversemadeof? in launched was (IPMU) Universe the of Mathematics and Physics the for Institute The

Mission

IPMU ANNUAL REPORT 2008 5 Mission Introduction 13 12 11 10 9 8 7 6 5 4 3 2 1 Contents Outreach andPublicCommunications Preprints. Publications. Visitors. Conference Talks. Conferences. Seminars. Research Highlight. 13 Research Program...... Staff. Organization. Introduction. Mission...... 11 ...... 53 ...... 5 ...... 63 ...... 41 ...... 7 ...... 59 ...... 47 ...... 9 ...... 49 ...... 31 ...... 73 ..... 2. with scientificcommunity, withfundingagencies,andgeneralpublic. communications aggressive in engaged been has IPMU Prize. JSPS 2008 the received Inoue K. and Prize, Inoue 2008 the received Nakahata M. astrophysics. in IPMU) with appointment joint Texas, (U Komatsu E. to and physics, computational in Yoshida N. to awarded was Prize ScientistYoung IUPAP 2008 The Prize. Yukawa-Kimura 2008 the received Sugimoto S. Award. awards.Researchand Humboldt 2009 receivedthe Ooguri and H. Prize Eisenbud inaugural the honors several received scientists IPMU journals. refereed in published were 70 and written, been have papers 178 of total A abroad. from came 168 visitors, 540 the Among seminars. Moreover, 48%ofthe33administrativestaffare bilingual. non-Japanese. are staff scientific full-time 46 the of 54% that fact the by fulfilled comfortably is worldwide" "visible is which institute an establish to WPI the by imposed Mandate staff. support research 22 including staff, administrative 33 and visitors, term long and appointments including joint staff, scientific 125 has now 2007, October in launch its of time the at zero from starting IPMU, The 2008. JFY of whole a and 2007 JFY of half latter a to corresponding 2009 ■ Total Students Long-term Visitors Joint Appointments Postdoctoral Fellows Faculty (notincluding4PIs) Principal Investigators Table 1:NumberofIPMUReseachstaff IPMU had active one and half year. We hosted 11 international conferences and 180 and conferences international 11 hosted year.We half and one active had IPMU March and 2007 October of period the during IPMU of progress the covers report This Introduction 100 200 300 400 500 600 700 0 01 12 11 10 1 2007 0 ■ 81 Figure 2:Numberofvisitortimes daypermonth 17 12345678 57 319 Visitor xDayvsMonth 49 Number 117 125 14 49 21 15 20 6 350 2008 149 208 687 91 Foreign 272 0111 60 13 19 17 5 3 3 394 197 21 227 2009 91 23 Female 310 0 0 1 6 1 1 3

IPMU ANNUAL REPORT 2008 7 Introduction IPMU ANNUAL REPORT 2008 8 Introduction ■ ■ conducted atKamioka. are that IPMU’sactivities for experimental support provides it ICRR, of Observatory Kamioka the near Located 2009. February in completed was Office Satellite Kamioka new of construction The discussion. active in engage and gather mathematicians, and physicists visitors, and researchers on-site where center a establishing to forward look Weresearchers. the among interactions active on emphasis strong a with designed was building laboratory new The it. behind buildings temporary several and Building Research General the in are around that scattered campus Kashiwa at offices in work to forced been have we years, half and one past the For 2009. October is date completion expected An campus. Kashiwa of ground the on ■ Publications Preprints Visitors (foreign) Seminars Conferences Figure 5:TheKamiokaSatellite Officebuilding. Figure 3:AerialviewoftheKashiwacampus. Table 2:ResearchActivitiesatIPMUinJFY2007andJFY2008 The construction of anxiously waited new laboratory building began in January 2009 January in began building laboratory new waited anxiously of construction The JFY2007 168 (65) 30 24 2 4 ■ ■ Figure 6:Newlaboratoryunder construction. Figure 4:IPMUtemporarybuildings. 372 (103) JFY2008 148 156 68 7 3. the SACasneeded. Director, the consult by may set who priorities and vision scientific the reflect will appointments proposed the Director’son approvalThe research. their help to IPMU at staff researchhire to Director the to proposals make can They conduct. they research the in autonomy large a have Investigators Principal The institutions. other as well as Tokyo) of (U Institution Host the in departments other and are IPMU they to and affiliated moment Therethe at arethem of twenty Investigators. Principal the as appointed are fields research their in scientists world’sleading objectives. their of course the on stay Institute the keep to activities research the and priorities scientific on President the advises and Institute the of activities and achievement scientific the annually Spergel, T. Yanagida), allappointedbytheDirector. Directors IPMU’s among five and Deputy (T. Investigators Principal twenty two D. Saito, K. Ooguri, H. Kohno, of consist members the 2008, August of As strategies. scientific setting and staff the President forconsultationsonbothscientificandadministrativematters. of Office the to access direct has EBM The Institute. the of operation smooth ensure to regularly (EBM) Meeting Board Executive the hold Director.They Administrative and Directors Deputy two by assisted is Director The staff. administrative and staff research other appointing and President, the to Investigators Principal the of recruitment proposing including decisions of range wide a making of authority complete a has Director The President. the to directly investigators asacore,IPMUstaff includingjuniorresearchers,collaborators,andvisitors. ■ Figure 7: IPMU’s research activities are conducted with a flat organization comprising of principal of comprising organization flat a with conducted are activities research IPMU’s 7: Figure IPMU has rather unique approach in organizing the research objectives, where the where objectives, research the organizing in approach unique rather has IPMU reviews President, University the by appointed (EAB), Board Advisory External The scientific hiring on Director the to advice gives (SAC) Committee advisory Scientific The reports and Tokyo of University the of President the by appointed is Director IPMU The External Advisory Collaborators Board

Organization IPMU Research Administrative Director Faculty, Postdocs,Students Principal Investigators U TokyoPresident Center Director Executive BoardMeeting Deputy Directors Scientific Advisory IPMU Management Committee Visitors

IPMU ANNUAL REPORT 2008 9 Organization IPMU ANNUAL REPORT 2008 10 Organization more timetoconsidertheInstituteatlarge andfocusonthedirection oftheresearch. This partisheadedbytheAdministrativeDirector. ItsfunctionalsoenablestheDirector tospend IPMU’smission. the for important essentially is Institute the in researchers the to environment ■ .RseihnUCBerkeley/UofAmsterdam N. Reshetikhin R. Peccei D. Morrison S. Kojima UofTokyo Y.K. Kim N. Kaifu M. Gonokami J. Ellis Table 3:TheEABmembersasofAugust2008 The administrative staff is an integral part of the Institute. Providing the best possible best the Providing Institute. the of part integral an is staff administrative The UCLA; Chair UC SantaBarbara Titech Fermilab/U ofChicago NAOJ CERN 4. N. Yoshida, Astrophysics N. Yasuda, Astronomy M. Vagins, ExperimentalPhysics Y. Toda, Mathematics A. Tsuchiya, Mathematics T. Takayanagi, Theoretical Physics F. Takahashi, Theoretical Physics M. Takada, cosmology Observational S. Sugimoto,Theoretical Physics K. Saito,Mathematics K. Nomoto,Astronomy H. Murayama,Theoretical Physics S. Mukohyama,Cosmology K. Martens,ExperimentalPhysics K. Maeda,Astrophysics S. Kondo,Mathematics K. Hori,Theoretical Physics S. Hellerman,StringTheory, ParticlePhysics Faculty Members T. Yanagida, Theoretical Physics A. Tsuchiya, Mathematics N. Sugiyama,Astrophysics D. Spergel, Astrophysics H. Sobel,ExperimentalPhysics K. Sato,Astrophysics K. Saito,Mathematics H. Ooguri,Theoretical Physics K. Nomoto,Astronomy M. Nojiri,Theoretical Physics M. Nakahata,ExperimentalPhysics T. Kohno,Mathematics S. Katsanevas,ExperimentalPhysics T. Kajita,ExperimentalPhysics M. Jimbo,Mathematics K. Inoue,ExperimentalPhysics M. Fukugita,Astrophysics Y. ParticlePhysics Suzuki,Observational H. Aihara,ParticlePhysics H. Murayama,Theoretical Physics Principal Investigators Y. ParticlePhysics Suzuki,Observational H. Aihara,ParticlePhysics Deputy Directors H. Murayama,Theoretical Physics Director

Staff Y. Hayato(Tokyo ICRR),Experimental Physics K. Hamaguchi(UTokyo), Theoretical Physics L. Hall(UCBerkeley),Theoretical Physics K. Hagiwara(KEK),Theoretical Physics M. Fukushima(Tokyo ICRR),Experimental Physics B. Fujikawa(LBNL),ExperimentalPhysics S. Freedman (LBNL),Experimental Physics A. Ferrara(S.N.S.Pisa),Astronomy S. Enomoto(Tohoku U),ExperimentalPhysics T. Eguchi(Kyoto YITP),Theoretical Physics Y. Efremenko (UTennessee), Experimental Physics M. Doi(UTokyo), Astronomy P. Decowski(NIKHEF),ExperimentalPhysics K. Abe(Tokyo ICRR),ExperimentalPhysics Joint Appointments J.V.M. Avelino (Valencia U),Theoretical Physics V. Rentala(UCBerkeley),Theoretical Physics S. Mandal(UCBerkeley),Theoretical Physics W. L.Klemm(UCBerkeley),Theoretical Physics T. Imoto(Nagoya),Astrophysics D.F. Gao(UCBerkeley),StringTheory Students K. Wang, ParticlePhenomenology M. Valdes (JSPSFellow) J.Y. Tan, Cosmology J. Schumann,ExperimentalPhysics J. Shu,Theoretical Physics K. Shimizu,(JSPSGrant-in-Aid),Astrophysics K. Shackleton,Mathematics S. Reffert,Theoretical Physics B.A. Powell,Cosmology M. Pichot,Mathematics S.C. Park,Theoretical Physics D. Orlando,Theoretical Physics T. Nozawa,Astronomy Y.T. Lin,ExtragalacticAstrophysics W. Li,Theoretical Physics A. Kozlov, Experimental Physics I. Kayo,(JSPSFellow)Astrophysics S. Harashita,Mathematics D.A. Easson,Theoretical ParticleCosmology C.R. Chen,Theoretical Physics C. Bambi,Theoretical Physics Postdoctoral Fellows T. Watari, Theoretical Physics

IPMU ANNUAL REPORT 2008 11 Staff IPMU ANNUAL REPORT 2008 12 Staff J. Alwall,Stanford (US) Long-term Visitors (more than1month) K. Yoshikawa (UTokyo), Mathematics J. Yokoyama (Tokyo RESCEU),Astrophysics C.W. Walter (DukeU),ExperimentalPhysics E. L.Turner (PrincetonU),Astrophysics A. Taruya (Tokyo RESCEU),Astrophysics Y. Takeuchi (Tokyo ICRR),ExperimentalPhysics J. Stone(BostonU),ExperimentalPhysics ExperimentalPhysics M. Smy(UCIrvine), M. Shiozawa(Tokyo ICRR),ExperimentalPhysics H. Sekiya(Tokyo ICRR),ExperimentalPhysics K. Scholberg (DukeU),ExperimentalPhysics Y. Saito(UTokyo), Mathematics A. Piepke(UAlabama),ExperimentalPhysics S. T. Petkov(SISSA),Theoretical Physics T. Nakaya(KyotoU),ExperimentalPhysics K. Nakamura(Tohoku U),ExperimentalPhysics T. Moroi (Tohoku U),Theoretical Physics S. Moriyama(Tokyo ICRR),ExperimentalPhysics M. Limongi(INAFRome),Astronomy A. Kusenko(UCLA),Theoretical Physics T. Kubota(OsakaU),Theoretical Physics Y. Koshio(Tokyo ICRR),ExperimentalPhysics E. Komatsu(UTexas), Cosmology M. Koga(Tohoku U),ExperimentalPhysics E. Kearns(BostonU),ExperimentalPhysics A. Kato(UTokyo), MathematicalPhysics M. Kawasaki(Tokyo ICRR),Theoretical Physics M. Kashiwara(KyotoU),Mathematics K. Kaneyuki(Tokyo ICRR),ExperimentalPhysics K. Izawa(KyotoYITP),Theoretical Physics S. Hosono(UTokyo), MathematicalPhysics G. Horton-Smith(UKansas),ExperimentalPhysics J. Hisano(Tokyo ICRR),Theoretical Physics R. Hirschi(UKeele),Astronomy K. Heeger(Wisconsin),ExperimentalPhysics Facilities N.Watanabe S. Higashi M. Nishikawa*,Y. Shimizu,M.Kanazawa, Kamioka Satellite Documentation K.Abe Computer andNetworkH.Tanaka, A.Tsuboi K.Kubota Library N. Abe*,H.Ezawa,S.Utsumi Contract andPurchasing Y. Kato*,T. Yamanaka Finance PlanningandBudgetControl H. Kuboshima,M.Nishikawa M. Ozawa*,H.Furuya,R.Ujita,K.Hara, International Relations K. Sunaga*,N.Ishida,H.Yoshida andTravelSarary Expenses Y. Enomoto,T. Shiga,K.Kawajiri F. Sakamoto*,N.Kurita,F. Miyazoe, M.Miura, General ManagementandPersonnel Chief A.Ito Head T. Yamanaka Director K.Nakamura Administrative Division(*sectionhead) F. Xu,Tsinghua (China) J. Xiao,Tsinghua (China) M. Verbitsky, Moscow(Russia) E. Sorokina, ITEP(Russia) A. Rosly, ITEP (Russia) I. Nisoli,Pisa(Italy) K. Nagamine,Nevada(US) M. Kiermaier, MIT(US) A. Hanany, MIT (US) S. Gorchinskiy, SteklovMathInst(Russia) A. Bondal,Aberdeen (UK) S. Blinnikov, ITEP (Russia) M. Bersten,Chile(Chile) 5. can changeEinstein’s atlongdistancestoaddress theory ofdarkenergy. themystery we if wonder we mind, in Einstein’s.this Newton’sto gravity,With from change theory to was explanation correct the and real not was planet dark the know, all we Mercury.However,as of behavior anomalous the explain to planet, dark so-to-speak a Vulcan, called planet invisible an of existence the hypothesized people some discovered, was Mercury when of century: shift perihelion 19th the the in story a of us reminds situation This is. really it what know not do we energy,but dark named is energy energy.This pressure, negative with filled is universe our of 70% than more that requires this correct, is Einstein’s theory If accelerating. is universe our of expansion the that revealed recently data observational Precision distances. short at as evidence ofextra-dimensionsinhigh-energy experimentsorcosmologicalobservations. indirectsome detect to directly,hope extra-dimensions may see we cannot we Although space. higher-dimensional in floating brane, called surface, 3-dimensional a be to supposed is universe our scenario this In scenario. brane-world the called is actively very investigated recently possibility One us. from hidden somehow are they but universe, our in everywhere exist may dimensions Extra dimensions. extra such of existence the requireM-theory, and theories superstring including theories, many fact, In distances. short at dimensions hidden be may there example For expect. we what from differently completely behave may gravity distances, shorter At mm. 0.01 than shorter distances at behaves gravity how know not however,do we Experimentally,phenomena. gravitational many predicting and explaining in successful very been has picture This spacetime. curved of fabric a as gravity describes and spacetime a as Alternative GravityTheories ■ Jun’ichi Yokoyama Naoshi Sugiyama Seong ChanPark Shinji Mukohyama Damien Easson Cosimo Bambi Member Table 4:AlternativeGravityTheoriesGroup Gravity at very long distances (for example, billions of light-years) may also be as weird as be also may light-years) of billions example, (for distances long very at Gravity Einstein’s theory of relativity unifies a 3-dimensional space and a 1-dimensional time 1-dimensional a and space 3-dimensional a unifies relativity of Einstein’s theory

Research Program Model buildingandconstraintsondarkenergy. Testing alternativegravitytheoriesusingobservationaldata. Study ofvariousapproaches. Brane worldscenariosandtheHiggsphaseofgravity. gravitational modelsusingobservationaldataandtheoreticalconsiderations. Alternatives todarkenergyexplaintheaccelerationofUniverse.Constraining black holephysics. General Relativity.Examinationofitspredictionsincontextssuchastheuniverseand Main Interest

IPMU ANNUAL REPORT 2008 13 Research Program IPMU ANNUAL REPORT 2008 14 Research Program November,in 2009. experiment the start to aim We 2009. in autumn and summer the during constructed be will detector the of parts major The constructed. was rocks nearby from neutrons and gamma rays shield to water of tons 800 contains which tank water cylindrical high 10m the that, We region. hope thatwewillstepintothediscovery limit. best current the than better magnitude of orders 2 about is sensitivity experimental The detector.the in Matter dark the of interaction the from emanated light scintillation the measure and Celsius degree -100 of temperature the at down cooled detector Xenon liquid ton 1 use We on. so and mass interactions, its -- matter dark of character the reveal to undergroundand placed detector large the in matter dark cold the of interactions observe directly to experiment, searchis matter XMASS, dark the of aim The of. made is that what know not do we but Dark MatterExperiment ■ connection betweencolliderphysicsanddarkmatter/cosmicrayphysics. the seek also We physics. exciting these investigate to tools theoretical the preparing now are groupthe Researchersin exotics. unexpected other energyor supersymmetry,dimensions extra low like physics new probe to breaking, symmetry electroweak investigate systematically to us enable will machine This scale. TeV the at physics exploring in opportunities great have will we 2009, in turn-on LHC upcoming the With (LHC). Collider Hadron Large CERN the especially colliders, the at model standard beyond and model standard the of physics testing Collider Phenomenology Kai Wang Jing Shu Vikram Rentala Seong ChanPark Mihoko Nojiri Hitoshi Murayama William Klemm Junji Hisano Koichi Hamaguchi Chuan-Ren Chen Member Table 5:ColliderPhenomenologyGroup In 2008, an underground cavity to house the experiment was completed and following and completed was experiment the house to cavity underground an 2008, In matter,dark is Universe the of matter and energy total the of 23% about that know We in research of range broad a pursue members group phenomenology collider IPMU Search forBSMandtestofSMattheLHC. Physics oftop,Z’,andhiggs. Spin determinationofnewparticlesusingquantuminterferenceattheLHC. (BlackMax). golden channelforfindingblackholesattheLHC.MCgeneratorholeevents Search forBSM,inparticular,extradimensionsandblackholesattheLHC. New physicssearchesandmeasurementsatLHC Determination ofspinandmassBSMparticles. spins ofnewparticles. How todiscoverBSManddistinguishfromoneanotheratcollider.Determinationof Flavor physicsandcolliderofBSM. cosmology (baryogenesis,BBNconstraints,darkmatteranditssignatures). BSM, inparticular,SUSYmodels,theirLHCphenomenologyandapplicationto Model (BSM). Collider phenomenologyoftheStandardModel(SM)andModelsBeyond Main Interest a mathematician’s original concepts. Particularly in recent years the interaction between interaction the years recent in Particularly concepts. mathematician’soriginal a establish to helps turn in This study. their in phenomena describe to method and language common a with general, in society sometimes and community, scientific the providing mathematics of example good a is This nature. in dynamics of law the describe to method and Mathematics epochintowhatitlookslikeatpresent.the inflationary fromevolved universe the revealhow orderto in questions these tackle to like Wewould forth. werecreated, so thereand whether not, or largeperturbations is density the in non-Gaussianity asymmetry baryon the as well as matter dark the how inflation, after reheated was universe the how occurred, inflation the how known fully not is it Nevertheless increased. significantly has Universe the of understanding our and precision, unprecedented with universe early the which canbestudiedviatinyinhomogeneitiesintheCMBtemperature anisotropy. models, inflation the on depend perturbations density the of properties The universe. current the in seen galaxies the of clusters and galaxies as such structures the of seed the for account can which perturbations, density tiny generate inflaton) an (called inflation the driving field a scalar of fluctuations quantum that is inflation about important more is What universe. the of stage early very the at expansion inflationary an of introduction the by solved beautifully are such asthehorizonproblem, theflatnessproblem, andthemonopoleproblem. Thoseproblems bang theory. Thesethree remain observations importanttenetsoftheearlyUniverse. big standard the for support key provide radiation (CMB) background microwave comic the and (BBN) nucleosynthesis bang Hubble’sbig law,The universe. FLRW the on based is theory relativity,general for bang equations standardbig Einstein the the and of isotropicsolution and homogeneous a universe, (FLRW) Friedmann-Lemaitre-Robertson-Walker the by described is universe early the of extremelyevolution and The dense hot. small, once was universe the time, refer to thisphenomenonasHubble’s law. suggeststhat,ifwecouldgobackin Thisobservation Inflation andEarlyUniverse ■ Yasuo Takeuchi Yoichiro Suzuki Masayuki Nakahata Shigetaka Moriyama Kai Martens Member Table 6:DarkMatterExperimentGroup In the 17th century, Newton found differential and integral calculus, giving a language a giving calculus, integral and differential found Newton century, 17th the In of evolution the study to us enabled has techniques observational progressrecentin The issues theoretical serious with plagued is theory bang big the success great its Despite We moving. is it faster the is galaxy a away further the and expanding, is universe The Dark MattersearchatXMASS. Discovery ofDarkMatter. Purification ofXenonforlowbackgroundexperiments. Direct detectionofDarkMatter. Identification ofparticlecandidatesforDarkMatter.Superlowbackgroundexperiments. Main Interest

IPMU ANNUAL REPORT 2008 15 Research Program IPMU ANNUAL REPORT 2008 16 Research Program treat widely been study have we objects geometric the then Since angles. and lengths triangles, Geometry: with physicists.Thefollowing are thefields ofmathematicsstudiedatIPMU. modern mathematicsandphysics. on influence major a had have groups quantum as such theory field quantum from arising concepts of lot a years, twenty these in Nevertheless, established. be to yet has mathematics in theory field quantum of development rigorous the freedom, of degrees of number infinite an of calculus integral and differential the treats theory field quantum Since mathematics. on by scientists suchasKepler,developed Newton,Gauss, Riemann,Maxwell,Einsteinandmanyothers. been have that universe and space of concept the of study the advancing for algebraic analysisandnumbertheory. Alarge scaledevelopmenthasbeennewlyemerging. geometry,algebraic as such differentialmathematics geometry, topology, representation theory, of development the in influences major provided have physics in systems integrable of theory mathematics andphysicshasbeeninfullflow. ■ Seong ChanPark Hitoshi Murayama Shinji Mukohyama Takeshi Kobayashi Ken-iti Izawa Koichi Hamaguchi Damien Easson Cosimo Bambi Member Jun’ichi Yokoyama Fuminobu Takahashi Naoshi Sugiyama Brian Powell Table 7:InflationandEarlyUniverseGroup Geometry studies various objects. In Euclidean geometry, beginning 2000 years ago, we ago, years geometry,2000 Euclidean beginning In objects. various studies Geometry working closely by mathematics modern develop to areworking IPMU at Mathematicians influence major a had have theory field quantum of methods years, twenty past the For important particularly is physics and mathematics between collaboration close This the and theory relativity,superstring general theory, field quantum theory, Gauge f( Two differenttypesofinflationmodels,theorbifoldGUTandtheorywith Leptogenesis. Modelsofinflation. Inflation andbranecosmology. Cosmology oftheearlyuniversethroughstringtheory. models. Gauge/gravity-mediated supersymmetrybreaking,supersymmetricinflation,united cosmology (baryogenesis,BBNconstraints,darkmatteranditssignatures). BSM, inparticular,SUSYmodels,theirLHCphenomenologyandapplicationto nonstandard inflationarytheories. Building concretemodelsofinflationfromstringtheory.Observablepredictions black holephysics. General Relativity.Examinationofitspredictionsincontextssuchastheuniverseand Main Interest Inflation models.Generationoffluctuations.Stochasticinflation. perturbations andnon-Gaussianity.Baryogenesis.BigBangnucleosynthesis. Mechanism ofinflationandsubsequentreheatingprocesses.Origindensity bang nucleosynthesisbyusingobservationaldata. Setting constraintsontheinflationmodelsandearlyuniversephenomenasuchasbig standard modelofparticlephysics. inflation asaphenomenonarisingfromstringtheoryandotherextensionsofthe Inflationary phenomenology,parameterestimation,andmodelbuilding.Understanding theory withthenon-minimalcouplingterm. φ )R term,socalledthenonminimalcouplingterm.The(p)reheatingofinflation ■ equations and the conformal field theory. These quantum invariants turn out to have a deep deep a have to out turn invariants quantum These theory. field conformal the and equations soliton systems, integrable as such theory quantum of study the with begun has manifolds dimensional low of invariants quantum of theory the Furthermoretheory. superstring from arising theory duality and symmetry mirror between interactions strong developing is topology perspectives. many from them study researchers individual other, and each influence and connected deeply are geometries of branches various however,Recently,these them. treating for methods and objects the to topology,geometry,accordinggeometry,differential algebraic symplectic named holes ingeneralrelativity andstringsbranesinsuperstringtheory. the setoffigures (manifolds)withsomeproperties onwhichweputsomenew structures. spaces, moduli the are objects geometric important most geometry,the modern In developed. Akihiro Tsuchiya Mikael Pichot Yukinobu Toda Ken Shackleton Yuji Sano Yoshihisa Saito Kyoji Saito Susanne Reffert Hirosi Ooguri Toshitake Kohno Shinobu Hosono Kentaro Hori Shushi Harashita Member Table 8:MathematicsGroup(Geometry) Quite recently the method of category arising from homological method in algebraic in method homological from arising category of method the recently Quite geometry, analytic geometry, algebraic as such geometry in branches many are There black as such objects geometric new study can we moduli, of concepts new the using By and thetheoryofD-modules. Conformal fieldtheorybasedonrepresentationofinfinitedimensionalalgebra hyperbolic). Foliationtheoryandtopologicaldynamicalsystems. Nonpositively curvedgeometryandgeometricgrouptheory(especiallyCAT(0) Thomas typeinvariants,countingsemistableobjectsinthederivedcategory. model theoryorhomologicalmirrorsymmetry.ConstructionofgeneralizedDonaldson- stability conditionsonthem.Itismotivatedbyseveralbackgrounds,suchasminimal Derived categoriesofcoherentsheavesonalgebraicvarietiesandthetheory combinatorial rigidityinfamiliesofgroupshyperbolicandrelativelygroups. Large-scale geometryofgroups(eg.mappingclassgroups),inthesenseGromov manifolds inthesenseofGeometricInvariantTheory. Canonical Kaehlermetrics(especiallyKaehler-Einsteinmetrics)andstabilityof related topics. Representation theoryofquantumgroupsandinfinitedimensionalLiealgebras, discrete groupsandmonoids. representation theory.PartitionfunctionsofIsingmodelson(non-commutative) dimensional Liealgebras(e.g.ellipticandcuspidalalgebras)their Construction ofprimitiveformsandassociatedperiodmapsbyuseinfinite Calabi-Yau geometriesintheframeworkofStringcompactifications. and geometrytosolvemysteriesofquantumgravity. Application ofnewmathematicaltechniquesemergingattheinterfacestringtheory homology oftheloopspacesconfigurationspaces. based onquantumgroupsandconformalfieldtheory.Algebraicstructuresofthe Construction oftopologicalinvariantsforbraids,knotsand3dimensionalmanifold Mirror symmetryofCalabi-Yaumanifolds,anditsapplicationstoGromov-Wittentheory. real algebraicgeometry,homologicalalgebra,andtheirapplicationtostringtheory. Mirror symmetryasabridgebetweensymplecticegeometryandcomplexgeometry, the mainproblemsinnumbertheoryandarithmeticalgebraicgeometry. expected tocontributeestablishingtheLanglandscorrespondence,whichisoneof positive characteristicandmoregenerallyShimuravarieties.Ourresearchesare Stratifications andfoliationsonthemodulispaceofpolarizedabelianvarietiesin Main Interest

IPMU ANNUAL REPORT 2008 17 Research Program IPMU ANNUAL REPORT 2008 18 Research Program ■ analysis ofinfinitedegrees offreedom. of method and concept a as theory superstring to related also are These algebras. homological of kinds various on depend and abstract highly are used methods deeply.The quite manifolds some kindsofinfinitedimensionalhomogenousspaceshasbeendeveloped. on operators differential linear as theory representation of kind Another developed. been has groups quantum of kinds various and algebras operator vertex algebras, Virasoro algebras, Lie the representation ofinfinitedimensionalalgebra,suchasAffineLiealgebras,Kac-Moody theory influences, physical recently, under Quite space. vector dimensional infinite some on operators between mathematicsandphysicsinarithmetic. interaction deep a of origin the is This systems. physical of distribution energy express that Galois groups andthedistributionofprimenumbers. of theory representation from functions zeta between relationship a using by mid-1990s the in solved was Fermat to due conjecture famous The geometry. arithmetic in studied manifolds on groups cohomology various as realized groups, Galois of representations using by studied are They groups. Galois are here objects important most The numbers. prime and integers of properties of study a as history long a has theory Number theory. number and geometry of variouskindsalgebras. theory representation and algebra theory,non-commutative number algebra, commutative are They treat. they methods and objects the by divided are that algebras of branches of number Algebra: from inmodernphysics. gaugetheory arising invariants Gromov-Witten-Thomas as such invariants quantum other with connection Akihiro Tsuchiya Kyoji Saito Mikael Pichot Satoshi Kondo Shushi Harashita Member Table 9:MathematicsGroup(Algebra) These connect analyses on various kinds of manifolds and the geometry of these of geometry the and manifolds of kinds various on analyses connect These linear as them realizing by algebras non-commutative studies theory Representation functions partition of kinds various closely resembles theory number in function zeta The algebraic study to method and language a as important is algebra Commutative a are There polynomials. and integers as such numbers of system the studies Algebra and thetheoryofD-modules. Conformal fieldtheorybasedonrepresentation theoryofinfinitedimensionalalgebra discrete groupsandmonoids. representation theory.PartitionfunctionsofIsingmodelson(non-commutative) dimensional Liealgebras(e.g.ellipticandcuspidalalgebras) andtheir Construction ofprimitiveformsandassociatedperiodmapsbyuse of infinite conjecture andthepropertyofrapiddecay.Noncommutativegeometry. Bruhat-Tits buildings.Grouptheoryandgroupalgebras.K-theory,the Baum–Connes theory. Arithmetic geometry.Useoftoolsfromalgebraicgeometrytostudyproblems innumber positive characteristic,andmoregenerallyShimuravarieties. Stratifications andfoliationsonthemodulispaceofpolarizedabelian varietiesin Main Interest Nothing isknownforsure yet,however, whatishappeningatevenshorterdistance scales. Models beyondtheStandard Model ■ non-perturbative approaches ofthesuperstringtheory. modules andconformalfieldtheory. Thesetheoriesgivebasiclanguagesandmethodsto realize lattice solvable 2-dimensional problems, many-body quantum 1-dimensional as such systems integrable with developed has theory this addition, In physics. and mathematics modern of of solitonequationssuchasK-dVarisingfrom non-linearequationsinphysics. theory the on influence deep a have theories these example, the For mathematics. on of areas various influence deep a has D-modules of theory The D-modules. of theory a as Sato Mikio mathematics. Analysis: of order 10 order of scale length the to down probed been has nature in physics of law fundamental The physics. Akihiro Tsuchiya Mikael Pichot Tadashi Takayanagi Kenneth J.Shackleton Yoshihisa Saito Susanne Reffert Domenico Orlando Hirosi Ooguri Kentaro Hori Michio Jimbo Member Table 10:MathematicsGroup(Analysis) After mainstream the into entered has equations soliton and D-modules of theory the Now by developed been has operators differential of ring the over module a of theory The in subject fundamental most the is It calculus. integral and differential studies Analysis -3 k fm = 10 = fm B , c and -8 Å ℏ , which is equivalent to the energy scale of order 10 order of scale energy the to equivalent is which , are set to unity, [length] = [energy] = [length] unity, to set are and thetheoryofD-modules. Conformal fieldtheorybasedonrepresentationofinfinitedimensional algebra algebras (C*-algebrasandvonNeumannalgebras) Measured dynamicalsystems.Representationtheory.Functionalanalysis, operator perturbative formulationsofquantumgravity. condensation instringtheory.Solvablematrixmodelsandtheirapplication tonon- Solvable conformalfieldtheoriesintheirapplicationstothedescriptionsoftachyon complexes. topology. Teichmüllertheoryandmappingclassgroups.Curvecomplexes,pants Geometric grouptheory.Hyperbolicandrelativelyhyperbolicgroups.Low-dimensional related topics. Representation theoryofquantumgroupsandinfinitedimensionalLiealgebras (Quantum) dimermodels.crystalmeltingandspinchains. models andtopologicalstrings. Spin chains(XXZmodelandrelatedtwo-dimensionallattices)inconnectiontodimer study thelandscapeofstringvacua. and branesinsuperstringtheory.Applicationofconformalfieldtheorytechniquesto Conformal fieldtheoriesindiversedimensionsthatarerelevanttodynamicsofstrings conditions. (2,2) and(0,2)superconformalfieldtheoriesconformallyinvariantboundary 1D spinchainssuchastheXXZchain. Quantum integrablesystems.Algebraicdescriptionofcorrelationfunctions Main Interest -1 is the only dimension left in left dimension only the is 2 GeV = 10 = GeV 11 eV.

IPMU ANNUAL REPORT 2008 19 Research Program IPMU ANNUAL REPORT 2008 20 Research Program and models in quantum field theories are theories field quantum in models and Model, Standard the of extensions motivate matter dark and perturbations density primordial a newdegree offreedom andextendtheStandard Model.Such cosmologicalissuesasinflation, introduceto motivation another hereis So, galaxies. of clusters and galaxies become eventually which universe, early in the of density fluctuations the become may field scalar a of fluctuations quantum and universe, early the in process inflationary an of because large so become have may universe Our Model. Standard the extend to motivation another find we where is This Model. Standard the in particles matter ordinary the actually is matter dark that unlikely very is energy.dark and matter dark of It consists universe the of fraction huge that known is It Model. expected infuture experiments,andevenpropose experimentstoconfirmsuch models. be can signals of kind what predict data, experimental available the all with consistent really are models such whether examine can we models, concrete have we Once problems. these to solution better a of quest in so do to far,continue so still constructed we been and have Model questions. weak bosonshavemassesthrough themechanismpredicted bytheStandard Model. missing pieceoftheStandard Model,andwillbediscovered inexperimentsnearfuture, ifthe last the is boson Higgs The boson. Higgs called boson, scalar new a of quanta of condensation from originate masses the Model, Standard the to According masses. acquire bosons are generated. masses these how yet experimentally confirmed been not has It bosons. vector these of masses non-zero the behind be must something that known is it theories, field quantum of consistency bosons, and they are called are they and bosons, responsiblethe for is (which force weak the to corresponding however,those bosons, vector the far.Among so available data experimental the all well reasonably describes forces different three for bosons issues. The origin of the masses of the weak bosons is not the only puzzle of the Standard the of puzzle only the not is bosons weak the of masses the of origin The Standard the beyond models theoretically,various questions these solve to order In • • following the about think us Let not. maybe but ..., Maybe story? the of end the that Is weak the how idea theoretical simple a provides Model Standard the called is What Up to now, we have seen that a quantum field theory with quarks, leptons and vector and leptons quarks, with theory field quantum a that seen have we now, to Up Recent reports of excess in high-energy cosmic ray fluxes, deviation from the Standard- the from deviation fluxes, ray cosmic high-energy in excess of reports Recent boson massesremain sosmallunderquantumcorrections? The Newton constant Newton The condensation develop? its does Why one? just and field, scalar one has Model Standard the does Why fields. vector or fermions either are Model Standard the in freedom of degrees dynamical other all Model; Standard the in field scalar only the is boson Higgs The 1/ energy scale and the weak boson masses of order 10 order of masses boson weak the and scale energy √ G N ℏ β /c -decay of nucleons) are known to have masses. Theremasses. arehave threevector areto such nucleons) known of -decay 3 〜 10 19 W GeV. Why is there a huge hierarchy of order 10 order of hierarchy huge a there is GeV.Why + , G W N

– 〜 and 6.7 × 10 × 6.7 the Z bosons, or weak bosons, as a whole. From the From whole. a as bosons, weak or bosons, appropriate framework in order to work on these on work to order in framework appropriate -11 m 3 kg/s 2 corresponds to an energy scale energy an to corresponds 2 GeV, and how can the weak the can how GeV,and 17 between this between ■ without amodelthatextendstheStandard Model. problems such about think to impossible is it again, Once set? parameters condition initial these are energy.How dark of amount the and contrast density of normalization asymmetry, baryon include parameters condition initial Those universe. the of condition initial of values parameter input several with only is MeV,it order but of temperature the with era the to back by consideringtheoretical frameworksthatcontaintheStandard Model? theoretically,them determine to possible be it Wouldexperimentally. them measuring by only determined be can parameters these of values the and parameters, 30 about with theory field the Standard Model.We therefore seekfortheoretical modelsthataccountforthesephenomena. beyond physics some of indications be also may predictions Model Standard the from deviations of reports other some and muon, of moment magnetic anomalous the of prediction Model Tsutomu Yanagida Taizan Watari Kai Wang Fuminobu Takahashi Jing Shu Vikram Rentala Seong ChanPark Hirosi Ooguri Hitoshi Murayama Sourav Mandal William Klemm Ken-iti Izawa Junji Hisano Koichi Hamaguchi Damien Easson Chuan-Ren Chen Member Table 11:ModelsBeyondtheStandardModelGroup The thermal history of early universe is described very well by the Standardleast the at by Model well very described is universe early of history thermal The quantum a by described is Model Standard The problems. following the address Wealso anomalies. PAMELA andATICdatasearching foraconvincingmodelthatexplainstheobserved quintessence, landscapes. SUSY breakingandmediation,flavor pattern,GUT,inflation,Peccei-Quinnaxion, Model buildingandphenomenology beyondtheStandardModelingeneral. Their collidertestsattheCERNLHC. Model buildingofBSMphysics,particularSUSYmodelsaswellneutrino models. breaking, darkmatter,andSUSYinflationmodels. Supersymmetry. Linkbetweensupersymmetricmodelsandcosmology, suchasSUSY Warped extradimensionmodels.Stronglycoupledtheory. Spin determinationusingquantuminterferenceattheLHC. Gauge-Higgs unification,orbifoldGUT,littelHiggsetc. Various ideasoftheBSM:warpedextradimension,modelEWSB inthecontextof mechanisms ingaugetheoriesandsuperstringtheory. theory oranyotherconsistentofquantumgravity.Supersymmetry breaking General constraintsonlowenergyeffectivetheoriesthatarisefrom superstring Supersymmetry breakingmodelsandphenomenology. experimental signatures. Addressing questionsinparticlephenomenology.Darkmattercandidatesandtheir at acollider.Determinationofspinsnewparticles. Signatures fromvariousbeyondthestandardmodels.Distinguishingoneanother models. Gauge/gravity-mediated supersymmetrybreaking.Supersymmetricinflation.United Construction ofrealisticmodelsatTeVandGUTscales. Supersymmetric models.Searchforcluesinacceleratorandnon-acceleratorphysics. (baryogenesis, BBNconstraints,darkmatteranditssignatures). SUSY modelsandtheirLHCphenomenologyapplicationtocosmology Universe. Physics beyondthestandardmodeltoexplainoriginofdarkcomponents LHC phenomenologyandcosmology. Model, includingSUSYandLittleHiggsmodels.Examiningtheinterplaybetween Collider phenomenologyoftheStandardModelandmodelsbeyond Main Interest

IPMU ANNUAL REPORT 2008 21 Research Program IPMU ANNUAL REPORT 2008 22 Research Program currently working on modifying KamLAND to detect very low energy solar neutrinos produced neutrinos solar energy low very detect to KamLAND modifying on working currently aremembers IPMU oscillations. neutrino proofof clear signal; reactorneutrino the in distortions spectral of evidence Earth’ssaw the KamLAND study interior.2005, to in way Also new entirely an in ushering geoneutrinos, detect to experiment first the was KamLAND 2005 in analyzed, be could data their which at threshold energy the lowering After fashion. spectacular in data neutrino solar experiments’ other matched which neutrinos, reactor of disappearance observe to experiment first the was KamLAND 2002 In itself. Earth the within decays radioactive by generated those and reactors nuclear from neutrinos energy low to especially sensitive, very it makes scintillator. This liquid of tons 1,000 with filled is it water of instead but Kamiokande, of neutrinosfrom distantsupernovas. stream a constant of detection first-ever the allow should benefits, physics other many among and, backgrounds reduce greatly will This gadolinium. element the with Super-Kamiokande inside water ultrapure the enrich to initiative an GADZOOKS!, on working now are members IPMU problem. the to solution angle mixing large the selected uniquely and flight, in while flavor their change could Sun the in reaction Boron-8 the by produced neutrinos solar that indicating by problem neutrino solar the of solution the to contribution crucial a made Super-K 2001 In data. experimental solid on based revised be to needed Model Standard the that inception its since time first the was StandardThis predictedthe Model. not by something mass, non-zero but small, a have neutrinos three the of two least at that implied also This oscillation. neutrino as another,known to process type a one from transform spontaneously can neutrinos of types different that discovery stunning the made Super-K 1998 in Earth’satmosphere, the in interactions ray cosmic by generated neutrinos studying By Alps. Japanese the under world. the in detectors neutrino famous most and best the of some on working researchershave of we teams IPMU At both. or sensitive, very big, very be to need detectors neutrino means That all. at matter with interact hardly they study,because to challenging exceedingly are neutrino, a charged leptoncalledthetau,andatauneutrino. quarks, of pair final a contains family third the while neutrino, muon the and muon, the called moretwo chargedcontains a generation quarks, second of The types neutral. lepton electrically is which electron neutrino, the called is lepton first-generation other the charge,and electric an carries which electron, the is lepton such one family first the In leptons. called particles massive less much two and quarks two are there families, or generations, these of each In particles. of theseare theneutrinos. mysterious most the perhaps and too, particles, fundamental unusual more much arethere But quarks. called particles fundamental smaller much of composed objects composite themselves areneutrons,which protonsand as well as particles, fundamental tell) can we as far (as indeed Neutrino Physics The KamLAND neutrino detector is located in the same ancient zinc mine as Super- as mine zinc ancient same the in located is detector neutrino KamLAND The deep buried water of tank ton 50,000 a is detector [Super-K] Super-Kamiokande The tau the and neutrino, muon the neutrino, electron the neutrinos, of types three The fundamental of generations three contains physics particle of Model Standard The are which electrons, of heard have people Most nature? of blocks building the are What the so-called weak lensing shear. Conversely, measuring the coherent shear signals between signals shear coherent the shear.measuring Conversely,lensing weak so-called the - distorted be to image the causing propagation, the during structure large-scale intervening Weak gravitationallensing: meter optical-infrared telescopeatthesummitofMaunaKea(4,200m), Hawaii. 8.2 Telescope, Subaru with survey future the of design and planning the in involved actively are and surveys current from measurements on worked have We surveys. galaxy massive from natureenergyexploredthe dark be and of can distribution matter structuredark The formation. of growth the affects therefore and expansion, cosmic accelerating the drives energy dark of presence the addition In structure.large-scale of formation the understanding to crucial is CDM of amount and distribution revealingTherefore structures. hierarchical present-day the form to perturbations density seed the amplifies distribution CDM of inhomogeneities spatial by driven mainly instability gravitational where model, dominated (CDM) matter dark cold the by given is scenario conventional most currently The cosmology. observational in issues compelling most Cosmology Observational ■ inaccessible placesandfarthestreaches oftheuniverseitself. most the probe to particles of tiniest these using are researchers IPMU stars, exploding inside and Sun, the within Earth, the above Earth, the upon Earth, the within them produce which volume. detector the to Xenon-136 of addition the via experiment decay beta double neutrinoless a huge into detector KamLAND the transforming as well as Sun, the in reaction Beryllium-7 the by Mark Vagins Yasuo Takeuchi Henry W.Sobel Jan Schuemann Masayuki Nakahata Hitoshi Murayama Kai Martens Takaaki Kajita Kunio Inoue Member Table 12:NeutrinoPhysicsGroup The path of light ray emitted by a distant galaxy is bent by gravitational force of force gravitational by bent is galaxy distant a by emitted ray light of path The of one is Universe the in structure large-scale of origin and nature the Understanding As we continue to understand the mysterious neutrinos, as well as the varied processes varied the as well as neutrinos, mysterious the understand to continue we As power reactors.T2Kexperiment.GADZOOKS Measurements ofneutrinosandantineutrinosfromsupernovae,thesun,nuclear Low-energy neutrinoobservationsinSuper-Kamiokande. Super-Kamiokande andT2Kexperiments.Neutrinophysics.Supernova.Protondecay. neutrinos fromdistantsupernovae. Improving theSuper-KamiokandedetectorbyintroducingGadolinium.Detectionof neutrino oscillation. measurement oftheenergyspectrumforconfirmationmattereffect Boron-8 solarneutrinomeasurementbySuper-Kamiokandedetector.Precise Neutrino oscillationphenomenology.KamLand. explosion. Super-Kamiokande experimentfordetectingneutrinosfromgalacticsupernova(typeII) Atmospheric neutrino.Longbaselineexperiments.Neutrinooscillations. beta decay.Directionalmeasurementofanti-neutrinos. Neutrino oscillation.geophysics.astrophysics.Neutrinolessdouble Main Interest

IPMU ANNUAL REPORT 2008 23 Research Program IPMU ANNUAL REPORT 2008 24 Research Program ■ development ofdataanalysispipeline. and survey galaxy HSC of planning and designing the on working and project, HSC this in involved actively are members, IPMU We, statistics. clustering galaxy and lensing weak data, the from available observables cosmological of measurements via energy dark and matter dark of nature the exploring for sets data ideal an us provide will sets data these fact few.In a of redshifts to up Universe the probe to depth the to reaches and degrees square thousands few a of area an covers that survey galaxy massive a designing and planning are we quality, image excellent and speed survey its HSC, of capabilities unique the utilizing Fully 10. of factor a by one current the than field-of-view wider has that camera new a Telescopewith Subaru of Hyper SuprimeCamera(HSC): simulations oflarge-scale structure. as well as sets data Subaru own our using phenomena lensing weak of studies theoretical and observational out carrying are energy.We dark and matter dark components, invisible of nature the studying for way powerful a offer observables based lensing weak energy.Thus dark natureof the to sensitive is that history expansion cosmic the on strengthsdepend lensing the scales, distance cosmological on propagation light the with deals shear lensing weak the matter.Moreover,dark invisible since of distribution the reconstruct to us allows images galaxy Naoki Yoshida Jun’ichi Yokoyama Masahiro Takada Naoshi Sugiyama Jan Schuemann Takaya Nozawa Keiichi Maeda Issha Kayo Yen-Ting Lin Member Table 13:ObservationalCosmologyGroup The HSC, currently under construction, is the project to replace the prime focus camera focus prime the replace to project the is construction, under currently HSC, The generate alargenumberofmock catalogues forfutureobservationalprograms. Large galaxysurveysandweaklensing observations.Computersimulationsto Analysis ofCMBanisotropy. Survey. energy, withthegravitationallensing observables.FutureSubaruWeakLensing structures oftheuniverse.Nature of darksidetheuniverse,matterand Observational andtheoreticalstudiesofgravitationallensingcaused byhierarchical lensing. using observationaldatasuchasthebaryonacousticoscillationand gravitational Investigation oftheCosmicMicrowaveBackground.Testingdark energymodels Super-Kamiokande byaddingGadolinium. Study ofneutrinofluxesandtheiroriginusingSuper-Kamiokande.Improving the the observationalcosmologyusingTypeIasupernovaeasastandard candle. Evolution ofdustthroughoutthecosmichistory.Evaluationimpacts ofduston supernovae ascosmologicaldistanceindicators. Supernova cosmology,especiallyintheevaluationofapplicability TypeIa gravitationally lensedquasarstoconstrainthedarkenergy. data generatedbyN-bodysimulations.Constructionofahomogeneouscatalog particularly usingtheactualdatatakenbySloanDigitalSkySurveyandvirtual Extraction ofcosmologicalinformationfromthelarge-scalestructureUniverse, data. nuclei. Evolutionaryconnectionsbetweengalaxiesatz=0andz=1usingfutureHSC survey andradiosurveystoelucidatethephenomenonofradio-loudactivegalactic supermassive blackholesontheformationofgiantgalaxies.DataanalysisBOSS Formation andevolutionofgalaxies.Rolesgalacticmergersfeedbackfrom Main Interest combining several channels, the most sensitive of which is which of sensitive most the channels, several combining of result the is Super-Kamiokande from limit present The neutrino. unobservable the to due background. At present, the best limit on this mode ( mode this on limit background.present,best At the excitation signature from the remnant the fromsignature excitation final-state by dominated is 44% of efficiency detection The Super-Kamiokande. of exposure kton-yr 141 a 10 construct iffurtherexperimentalinformationisnotavailable. experimental results. will subsequentgrand unificationtheory Every remain onlyamathematical the by out ruled been has SU(5), minimal model, unification simplest The success. a been already has program This physics. of development future the for value unique has goal this problem ofconfronting grandunifiedtheorieswithexperimentaldata,andanyprogress toward hint ofanucleondecaysignalhasemerged. decay. nucleon of shoals the floundered on no has date, another To after promising theory one 1980’s, the in searches large-scale first the with Beginning all. us outlive to determined seems decay.Experimentally,to however,proton “wants” the proton the scale, mass TeVintermediate a with those particularly theories, unified grand most In today. physics particle in challenges Proton Decay estimates ontheacousticscaleaswellcosmologicalparameters. unbiased obtain to order in clustering galaxy of properties measuring for method optimal an develop to planning are energy.We dark of models the test to enabling thereby redshift, galaxy the to distance diameter angular the infer can ruler,we standard a as scale acoustic the Using universe. early the in oscillations acoustic baryon by imprinted scale characteristic the detect to quasars and galaxies luminous of distribution spatial the map will (BOSS) Survey Spectroscopic Oscillation Baryon the surveys, planned the of particular,one In release. data public the before sets data the to access freely can and SDSSIII in involved are members, IPMU We, spectrograph. improved the with universe deeper a to surveys SDSS previous the extending telescope, Observatory’s2.5-meter Point Apache the of capability spectroscopic III: Sloan DigitalSkySurvey β is mode this on limit present The future.foreseeable the for freebackgroundremain should × 10

events/Mton-yr. >2.3×10 33 years, for example, requires a detector with approximately10 with requires detector example, a for years, 29 The search for nucleon decay requires massive detectors. A search with a sensitivity of sensitivity a with search A detectors. massive requires decay nucleon for search The the to approaches few the of one provides decay nucleon of study the this, of spite In experimental and theoretical greatest the of one represents proton the of stability The wide-field unique the exploit will SDSSIII the (2008-2014), years six next the Over The “classical” proton decay mode, decay proton “classical” The Recent theoretical work suggests that if super-symmetric SO(10) provides the framework the provides SO(10) super-symmetric if that suggests work theoretical Recent Supersymmetric theories favor the mode the favor theories Supersymmetric nucleons pertonofmaterial,thisimpliesdetectors multi-kilotonscale. π 0 absorption or charge-exchange in the nucleus, and the expected background is 2 backgroundis expected the and nucleus, the charge-exchangein or absorption 33 yr(90%CL). 15 N nucleus. Monte Carlo studies suggest that this mode this that suggest studies Carlo Monte nucleus. N p → p e →ν + π τ K 0 / , can be efficiently detected with low with detected efficiently be can , + β , which is experimentally more difficult more experimentally is which , > 8.2 × 10 × 8.2 > K +

→ 33 μ nucleons. Since thereare6 Since nucleons.

+ 33 ν yr, fromcomes CL) 90% accompanied by a by accompanied

de- τ /

IPMU ANNUAL REPORT 2008 25 Research Program IPMU ANNUAL REPORT 2008 26 Research Program the same. preparedbe futuremust any experiment and do past, to astrophysicsthe particle in and physics neutrino to contributions fundamental made have experiments decay Protondecay. to proton the for waiting while questions physics important other address to experiment’sability future any of importance the underline detection) positive for prospects unknowable the (and limits nucleon decayinevitablyrequires larger detectors. years -aboutafactoroftenbeyondthepresent limit.Thus,continuedprogress inthesearch for terminate at 10 at terminate will nature of structure hierarchical the that think to Surprisingly, are reasons there indefinitely? continueprogression this Does distances. shorter and shorter at phenomena exploring by String Theory ■ favored the (into lifetime proton the grand-unification, for particle physics. Superstring theory has helped us solve various mysteries of quantum gravity quantum of mysteries various solve us helped has theory Superstring physics. particle of Model Standard the deduce to and mechanics quantum and relativity general unify to necessary ingredients the all contains it since scale Planck the at physics describe to framework mathematical a for candidate leading a is theory Superstring structure. fundamental more a hierarchical structure ofnature willterminate. the where distance the is it since fundamental truly is length Planck The of principle. kind uncertainty new a is This length. Planck the than shorter distances at happening is what seeing ever from physicists prevent would This apart. torn be would time and space of fabric the that much so geometry the perturb would energy this at measurement the way, another in Stated energy,high entirethe conceal will horizon event area.its interaction and form will hole black a distances shorterthanthePlancklength?Theanswer isno.Whenwecollideparticleswithsuch far.probeso can case it energythe that with high collider so a build we can ask: then may One The more energy weusetocollideparticles,theshorterdistancescanexplore. Thishasbeen distances. short probe to colliders particle build Physicists case. the be might this why explain about oneorder ofmagnitudepresent limits.Similarly, SO(10)theoriessuggest Mark Vagins Henry W.Sobel Jan Schuemann Takaaki Kajita Member Table 14:ProtonDecayGroup Moreover, the enormous mass and exposure required to improve significantly on existing on significantly improverequired exposureto and Moreover, mass enormous the In the past few hundred years, scientists have searched for fundamental laws of nature of laws fundamental for searched have scientists years, hundred few past the In Space and time do not exist beyond the Planck scale, and they should emerge from emerge should they and scale, Planck the beyond exist not do time and Space 35 meter, the so-called Planck length. Let us perform a thought-experiment to thought-experiment a perform us Let length. Planck so-called meter,the decay. backgrounds. Developmentofnext-generation,megaton-scaleexperimentsforproton free neutronssignificantlysuppressingatmosphericneutrino-inducedprotondecay Improving theprotondecaymeasurementinwater-baseddetectorsviadetectionof Updated measurementofprotondecay. Updated protonlifetimemeasurementusingGadolinium-enrichedSuper-Kamiokande. Updated searchesforprotondecays. Main Interest ν K + decay mode) must lie within lie must mode) decay τ / β (e π 0

) ≈ 10 35

grow bytheactionofgravity, eventuallyformingluminous objectssuchasgalaxies. fluctuations density primeval These universe. early very the in inflation called phase expansion rapid througha aregenerated matter of distribution the in “ripples” Tiny born. was it when hot sophisticated theoretical models. and simulations computer large using formed are objects these how study We structure. scale Structure Formation ■ investigated atIPMU. vigorously are theory string of aspects these of All mathematics. in developments important quantum liquidandphasetransitions.Ithasalsoinspired many interactions), quark of (theory QCD as such - systems interacting strongly involving often - physics theoretical in problems difficult many study tools powerful provides It physics. particle of Model Standard the beyond models and cosmology universe early into insights us given has theory The Hawking. Stephen by posed holes black of paradox information the as such Taizan Watari Tadashi Takayanagi Shigeki Sugimoto Ken Shackleton Susanne Reffert Domenico Orlando Hirosi Ooguri Shinji Mukohyama Wei Li Toshiya Imoto Shinobu Hosono Kentaro Hori Simeon Hellerman Dongfeng Gao Damien Easson Member Table 15:StringTheoryGroup The standard Big Bang model posits that the universe was nearly homogeneous and very very and homogeneous nearly was universe standardthe The that posits model Bang Big There are rich structures in the present-day universe, such as stars, galaxies, and large- and galaxies, stars, as such universe, present-day the in structures rich are There String phenomenology.Inflation(inthepast).GUTandF-theorycompactification. entropy suchastheblackholeentropy. AdS/CFT duality.Relationbetweentheentanglemententropyand gravitational String theoryasquantumgravityespeciallyfromtheviewpointofholography suchas and hadronphysics. Conjectured dualitybetweenstringtheoryandgaugetheory,itsapplicationtoQCD Teichmueller space. Connection betweenstringtheoryandthecompletionofWeil-Peterssonmetricon String compactifications.Topologicalstringtheory. Exact CFTsolutions.Topologicalstrings.EffectivedescriptionsforM-theory. energy physics,astrophysics,andcosmology. Development oftheoreticaltoolstoapplystringtheoryquestionsrelevanthigh String cosmology. Black holes.Gauge/Gravitycorrespondence.3Dquantumgravity. Holographic QCD. Mirror symmetryofCalabi-YaumanifoldsanditsapplicationstoGromov-Wittentheory. well assupersymmetricgaugetheoriesinvariousdimensions. holonomy manifolds,worldsheetapproachestoheteroticstrings.Topologicalstringsas approaches toTypeIIorientifoldswithD-branesandfluxes,M-theoryonG_2 4d N=1stringcompactificationsinvariousframeworks,especially,worldsheet theory ingenericenvironments. particle physicsandmathematics.Developmentoftoolstounderstandapplystring String theoryanditsconnectionstoquantumgravity,cosmology,condensedmatter, Mathematical aspectsofstringtheory. theory. BraneGasmodelofstringcosmology. Building modelsofinflationfromstringtheory.Timedependentsolutionsin Main Interest

IPMU ANNUAL REPORT 2008 27 Research Program IPMU ANNUAL REPORT 2008 28 Research Program Dark Energy. the of discovery the to leading indicators, distance cosmological as use their by highlighted is natures their understanding of importance Finally, galaxies. of evolution and formation in even roles important play could explosions supernova and huge, is explosions the at produced energy Their elements. of sorts different hundred a about with filled is Universe the reality in although elements, minor some and helium hydrogen, only be would Universe the in baryons them, without Universe; the in elements heavy of contributors main the are they Furthermore, Earth. the on experiments by addressed be not can which of some physics, neutrino as driven bynuclearreactions withinawhite-dwarfstar. (Typesupernovae Thermonuclear neutrinos. of amount huge a by announced areIa) explosions hole, black a or star neutron a of formation by followed Sun), the as massive as times ten morethan (i.e., stars massive of collapse gravitational the of outcome the are Ic) and Ib, II, (Type Supernova ■ programs suchasSubaru-HSCdarkenergy survey. observational large generation next for proposals and plans good making for used be will studies these from Results structure.large-scale of formation the and galaxies, of evolution and canbedirectlyobservations usedtoverifythem. predictions,solid wheremake stage can a whereasat now theory is broadCosmology a of class supernovae. distant and distribution galaxy large-scale radiation, background microwave cosmic of observations recent from accuracy great with determined been have universe early Yen-Ting Lin Naoki Yoshida Masahiro Takada Naoshi Sugiyama Issha Kayo Member Table 16:StructureFormationGroup Supernovae provide natural laboratories for a range of physical processes, such processes, physical of range a for laboratories natural provide Supernovae supernovae Core-collapse lives. their of end the at stars of explosions are Supernovae formation the universe, early the in formation star primordial in areinterests primary Our the of condition the describe that statistic basic and universe the of content energy The cosmology. the statisticalpropertiesofclusters(suchasclusteringandabundance)toconstrain SDSS, andSubaru,tostudytheevolutionofgalaxieswithinclusters,aswelluse clusters viatheSunyaev-Zel’dovicheffect(SZE).AnalysesofdatafromACT, Atacama CosmologyTelescope(ACT)project,alargeclustersurveythatdetects supercomputer simulations. Formation ofstars,galaxiesandthelarge-scalestructureuniverseusing Survey. energy, withthegravitationallensingobservables.FutureSubaruWeakLensing structures oftheuniverse.Naturedarksideuniverse,matterand Observational andtheoreticalstudiesofgravitationallensingcausedbyhierarchical fields. Investigation oflinearevolutionstructureintheuniverseandeffectmagnetic gravitationally lensedquasarstoconstrainthedarkenergy. data generatedbyN-bodysimulations.Constructionofahomogeneouscatalog particularly usingtheactualdatatakenbySloanDigitalSkySurveyandvirtual Extraction ofcosmologicalinformationfromthelarge-scalestructureUniverse, Main Interest ■ evolution oftheUniverse. the on influences their and supernovae comprehensivelyunderstand to aim we attempts, these unifying By Maeda). (K. telescope Subaru the using observations and Maeda), K. Nomoto, (K. indicators distance cosmological as use their of evaluation and supernovae from emission (T.grains dust Wanajo),of (S. formation optical beyond of and iron Maeda) theory (K. Nozawa), to up elements of nucleosynthesis Nomoto), (K. explosion thermonuclear of theory Vagins), (M. Kamioka at neutrinos these detect to attempt and Sato) (K. supernovae from neutrinos of theory Sato), (K. explosion and core-collapse of theory Nomoto), (K. supernovae toward stars of Evolution supernovae; to related topics the of most cover we IPMU, At investigation. under Mark Vagins Shinya Wanajo Yasuo Takeuchi Henry W.Sobel Jan Schuemann Takaya Nozawa Ken’ichi Nomoto Masayuki Nakahata Keiichi Maeda Member Table 17:SupernovaGroup Our understanding of the above issues is still far from satisfying, with various issues still issues various with satisfying, from far still is issues above the of understanding Our neutrinos fromasupernovawithinourgalaxy. Improvement ofSuper-Kamiokandeexperiment’sresponsetothearrivalaburst Detection ofthediffuseneutrinobackgroundproducedbydistantsupernovae. species (e.g.,gold,platinum,uranium,etc.)incore-collapsesupernovae. Origin ofelementsthataresynthesizedinsupernovae.Nucleosynthesisr-process Real-time neutrinoburstsearchinSuper-Kamiokande. decay. Super-Kamiokande andT2Kforstudyingneutrinophysics,supernova,proton formations, pastandpresent. Gadolinium-upgrade forSuper-Kamiokandeobservingneutrinosfromsupernova destruction ofdustintheshockdrivenbysupernovae. Evolution ofdustathighredshifts,consideringtheformationinsupernovaeand huge explosionenergyfromblackholesandneutronstars. evolution. Gamma-rayburstsandhypernovaetoclarifytheproductionmechanismsof mechanism. Evolutionandnucleosynthesisoffirststarstostudycosmicchemical and theequationofstatedarkenergybyclarifyingprogenitorsexplosion Type Iasupernovacosmologytoprovideprecisionconstraintsoncosmicacceleration supernova burstneutrinosandrelicneutrinos. Search forsupernovaneutrinosusingSuper-Kamiokandedetector.Itcoversboth supernovae. Theory ofnucleosynthesisandradiationtransfer.Observationsindividual Main Interest

IPMU ANNUAL REPORT 2008 29 Research Program IPMU ANNUAL REPORT 2008 30 Research Program 6. respect to the cluster center, and this coherent signal can be discriminated in a statistical sense. statistical a in discriminated be can center,signal coherentcluster this the and to respect with tangentially deformed preferentiallyare images Galaxy images. galaxy background of pattern distortion coherent a causes effect shearing gravitational this 8, Figure in demonstrated However,shapes. as intrinsic various has and circular not is shape galaxy the as shape intrinsic lensing, which istheso-calledweaklensingshear.the by sheared or deformed slightly is image galaxy distant of shape the result, a As more is center cluster the versa. to vice closer and ray lensing light by a deflected that such field gravitational the of gradient the to due sky the on rays light neighboring for different slightly is diffraction lensing gravitational cluster.The a of effect lensing gravitational the by affected are cluster a behind images galaxy how showing 8, Figure of image simulated a in demonstrated is examples such of One phenomena. lensing striking most display clusters galaxy Thus universe. the in objects bound gravitationally massive, most the is radius in scales Mpc few a of components oftheuniverse,darkmatterandenergy. exploremysterious natureto invisible therebythe us of universe, allowing the in matter invisible the unveiling for window a up opens thus lensing gravitational Thus not. or visible is matter the recover to us whatever allows matter total lensing of gravitational distribution the the measuring Conversely lensing. gravitational so-called the is which bent, is and straight travel cannot light the space-time, curved a such through propagates ray light a When space-time. of curvature the by described is gravity of strength the and curved, is space-time surrounding the exists, Relativity) General in equivalent are two (the energy or matter Relativity.When theory,General with gravitationallensing Measuring darkmatterdistributioninagalaxyclusterregion For each galaxy image, we cannot discriminate lensing distortion signal from its from signal distortion lensing discriminate cannot we image, galaxy each For region a within galaxies of thousands to hundreds from containing galaxies of cluster A Einstein’sgravity Albert of predictions important most the of one is lensing Gravitational Research Highlight Hamana, NAOJ) T. (Credit: images. galaxy of characteristic pattern coherent causing thus center, cluster the to respect with deformed tangentially preferentially are images galaxy background cluster, massive a around that, clear is It distortion. lensing of strength the to corresponds rod of size The rod. the along deformed is image galaxy background a that demonstrate position each at rods small The middle. the at cluster massive very a has region simulated This density. mass higher with region the shows region color redder the observer; an density and mass 1 redshift of the galaxies between projected show field scales color The side). a on degree 1 (about region cluster a in lensing ■ Figure 8: A simulation image of gravitational of image simulation A 8: Figure

IPMU ANNUAL REPORT 2008 31 Research Highlight IPMU ANNUAL REPORT 2008 32 Research Highlight particles like dark matter. Also the detailed analysis shows that the amount of total matter total of amount the that shows analysis detailed the matter.Also dark like particles collision-less like behave and gravity via only components other with interact formed, once galaxies, member the because expected, much is agreement This distribution. mass the follow well to appears distribution galaxy The galaxies. member of distribution the depict contours red the hand, other the On measurements. (radio) effect Sunyaev-Zel’dovich and X-ray the via observed distribution gas hot intracluster frominferred shape the to compared elongated more position ofthebrightestgalaxymember). center,cluster the to inferredis center from(the center cluster the the to near peaks indeed and 1 the density field reconstructed from thelensingmeasurement. Notethateachcontourissteppedby mass two-dimensional the show contours (thick) blue the while data, imaging Subaru the shows image color The A1689. cluster the for galaxies background on effects lensing gravitational weak of measurement the from reconstructed distribution mass the showing study, our of example one shows 9 Figure data. Subaru the using by lensing cluster of study systematic analyzed). be to galaxies many or images deep delivering (i.e. power collecting photon and quality image excellent its to thanks clusters, galaxy of signals lensing weak the measuring for instrument best the is Hawaii in Mauna Mt. 4,200m of summit the at and diameter in mirror primary 8.2m with Telescope Subaru the senses, these In precision. high with images galaxy of shapes the measure to (2) and images the of pattern shearing coherent the extract to order in possible as galaxies many as use to (1) need we signals, distortion lensing weak these Tomeasureregion. cluster entire the in distribution matter total the measuring of means unique a providing contribution ofdarkmatter. the includes which way, model-independent a in region cluster the in distribution mass the recover can we images, galaxy background of pattern coherent this measuring by Inversely, σ The shape of mass distribution is not spherical and has an elongated structure, usually structure, elongated an has and spherical not is distribution mass of shape The a out carrying been has collaborators, of team a with together Takada,Masahiro cluster,thereby a of region whole the to out extends but weak, is signal lensing This measurement error. It is clear that the mass density gets denser as one is approaching is one as denser gets density mass the that clear error.is measurement It mass distributionasexpected. the follows well which galaxies, member of distribution the show contours red the hand, other the On predictions. model matter dark cold the with agreement good in be to found is distribution mass of properties the and center, cluster the towards higher gets indeed field density mass The images. galaxy background on effect shearing lensing mass the show weak of measurement the from contours reconstructed field density blue the while A1689, of data imaging Subaru the shows image gray The A1689. cluster ■ Figure 9: The weak lensing measurement result for the for result measurement lensing weak The 9: Figure of hundreds of kiloparsecs (10 kiloparsecs of hundreds of a dynamic range of 10 of range dynamic a covers simulation The times. early these at neglected be can elements, heavy or fields magnetic strongpresenceof the as such universe, local the in formation star of investigations plague that processesrigorously.these follows simulation The complications understood. areOther well gas hydrogen-helium a in processes molecular and atomic and hydrodynamics, gravitation, as such physics basic important other All universe. the of model standard the constituting established shine itslightintothisdarkness. eventually would which proto-star a of formation the study to simulation computer of-the-art state- a conducted Astrophysics, for Center Harvard-Smithsonian of Hernquist Lars and Japane being. into come to stars subsequent for seeds the provided explosions eventual and formations their because important so is questions these to answers the Knowing years. for question burning a been primordial fromhas cosmic formed gas the stars first the How age”. dark cosmic “the as to hydrogen andheliumasaformofgaswithnoluminousstars.Thisperiodissometimesreferred as such elements simple only had Bang Big the after soon universe the that thought generally is It unknown. largely however,remains that, to prior year million hundred few a of the period during universe the of Nature old. years billion 1 than less was universe the when place Protostar FormationintheEarlyUniverse on a side. A gravitationally bound dark-matter halo that formed in the volume at an epochwhen thecosmologicalredshift wasz= 14 isshowninFigure 10. an at volume the in formed that halo dark-matter bound gravitationally A side. a on gravitational collapseofdark matter. the follows simulation matter.The dark cold and energy dark by dominated is density energy derived constraintsoncolddarkmattermodelinthenearfuture. the report hopefully will and 2009) May of as clusters 40 (about sample cluster homogenous of data Subaru collecting now is team study.The lensing our of goal the is matter,which dark of nature the on constraints derive to as well as paradigm matter dark cold the test to used be can predictions theoretical the with distribution mass reconstructed the of comparison detailed a Thereforegravity. via only particles other with interacts and dispersion) velocity intrinsic (negligible cold is matter dark assumptions: critical several on based derived are predictions model The scenario. formation structure dominated matter dark cold from predictions matter onclusterscales. matter,dark invisible i.e. of existence the suggesting strongly gas, hot intracluster and member galaxies of sum the than greater 10) factor a (by much is signal lensing the from inferred Their simulations use the initial condition determined cosmologically and by now well now by and cosmologically determined condition initial the use simulations Their of observatory Astronomical National of Omukai Kazuyuki with together Yoshida, Naoki in were that objects astronomical distant revealed have telescopes modern-day Large They followed the evolution of dark matter and gas in a cube 200 comoving kiloparsecs comoving 200 cube a in gas and matter dark of evolution the followed They Further reading: arXiv:0903.1103(submittedtoPASJ) the with agreement good in be to found are distribution mass of properties These 13 , from a fraction of solar raduius (10 raduius solar of fraction a from , 23 cm). According to the standard model of the universe, the universe, the of model standard the to According cm). 10 cm) to cosmological volume cosmological to cm)

IPMU ANNUAL REPORT 2008 33 Research Highlight IPMU ANNUAL REPORT 2008 34 Research Highlight fortheformation oflaterpopulationsordinarywhich isnecessary stars. stars, primordial massive by universe the in enrichment chemical early the for scenario viable a provides model The M. 100 be will sequence main the on lands it when star the of mass the that predicts rate accretion large similarly a for calculation protostellar detailed A years. 1000 within M 10 as massive as be grow to protostaraccreted quickly efficiently, protostar would the the Sunmayhaveformedfrom tinycosmologicaldensityfluctuations.Ifthegassurrounding the an initiallyslowrotation. with gas collapsing a of characteristic was structure velocity overall The rotation. and pressure thermal both by supported was protostar born newly The perturbations. nonaxisymmetric by exerted torques gravitational via momentum angular its of part lost core central The collapsed. gravitationally had part central the whereas supported, centrifugally nearly appeared M) single accretion shock. (10 solarradii)region. Clearly, theprimordial protostar wasnotsimplyasphere surrounded bya innermost the in even temperature and density in variations substantial werethere time, this At the epochofprotostar formation. to up density in decades 20 than more for followed were cloud gas primordial the of evolution chemical and thermal subsequent The halo. dark host the in collected cloud gas forming star- a cooling, radiative of action the Through cooling. radiation efficient enabling formed, of 1000 K, and a small mass of hydrogen molecules ( molecules hydrogen of mass small a and K, 1000 of primordiala host to star.it for conducive particularly temperaturea had halo this within gas The Further reading: Science1August2008:Vol 321.no.5889,pp.669-671 resultsThe picturecomplete a show primordiala how of protostar of that 1% mass a with 0.1 to (0.05 part outer the rapidly; rotated arms spiral two M, 0.1 of mass a Within (Fig.10D). complex rather was protostar formed newly the around and in structure The The mass of this halo (500,000 solar masses, M) and the physical conditions within it are it within conditions physical the and M) masses, solar (500,000 halo this of mass The from 0.01 to 10 to 0.01 from densities number hydrogen scaled logarithmically to corresponds red dark to purple light from scale color The side). a on radii solar (25 protostar final The (D) side). a on units astronomical (10 core molecular fully the of part central The (C) side). a on pc (5 cloud star-forming self-gravitating, A (B) side). a on pc (300 halo cosmological the around distribution gas large-scale The (A) protostar. the ■ and from 10 from and which scalesfrom3000to12,000K. (D) showsthedensity-weightedmeantemperature, Figure 10: Projected gas distribution around distribution gas Projected 10: Figure 〜 10 -4 in number fraction) had already had fraction) number in 14 to 10 to 3 cm -3 19 (A), from 10 to 10 to 10 from (A), cm -3 (C). The color scale for scale color The (C). 6 cm -3 (B), because Type Ia supernovae are the primary source of heavy elements in the Universe, and Universe, the in elements heavy of source primary the are supernovae Ia Type because significant is finding galaxy.This our in Ia Type for candidates best the of one be to thought is such, as and, Ia, Type Normal of class majority the to Tycho’sbelongs that supernova shows detail. in mechanisms outburst the studied team the supernovae, Ia Type the of diversity the explain to order In debate. under come has mechanism outburst supernova the of understanding the recently,reported been have ones standard than brighter/fainter luminosity with supernovae Ia Type However,as outburst. supernova cataclysmic a to leads eventually that inside reaction nuclear runaway a off sets eventually and compressed,progressively is dwarf white the dwarf, white the onto accumulates star companion the of gas the as and source, typical the is system nature ofthesupernovaprogenitor. ForType Iasupernovae,awhitedwarfstarinclosebinary supernova (Figure 13). Ia Type a of typical very were findings The emission. H-alpha hydrogen the of absence and silicon once-ionized of absorption clear showed results The blast. original the of nature the about information the all bearing exploded, 1572 Supernova when present (spectra) atoms of signatures the into apart broken were 12) (Figure echoes light the Subaru, at instrument supernova remnant (FigureTycho’s 11). as today seen are event milestone this of remains The view.from faded it when 1574 March until star” “new the of color and brightness the studied energy.He of outburst bright extremely an out sends star a of death violent the where event supernova rare a actually was Venus, even outshining Cassiopeia, constellation the in star bright a as observed Brahe What others. and Brahe Tycho astronomer by 1572 November 11 on seen was originally that star” Light Echosofthe1572Supernova The comparisons with template spectra of Type Ia supernovae found outside our Galaxy our outside found supernovae Ia Type of spectra template with comparisons The the and mechanism explosion the of theories tested astronomers the study, the During Spectrograph(FOCAS) and Camera Object Faint the using 2008, September 24 On “new a from light observed and time in back Telescopewent Subaru the at Astronomers remnant isapproximately25light-yearindiameter. The data. various of composite color a Remnant: ■ Figure 11: Image of Tycho’s SupernovaTycho’s of Image 11: Figure

IPMU ANNUAL REPORT 2008 35 Research Highlight IPMU ANNUAL REPORT 2008 36 Research Highlight Max-Planck Institute. date, hasbeenimpossiblewithdistantsupernovaeingalaxiesoutsidetheMilkyWay. to which, structure, spatial their on based supernova of mechanism outburst the of study the accelerate will aspect 3D future,view.this threethe dimensional a For in supernova the at look to team the enabled source, the from angles position different at observed when echoes, light The ago. years of hundreds occurred that outburst supernovae study to manner spectroscopic put limitsonexplosionmodelsforfuture studies. could turn, in which, explosion, aspherical/nonsymmetrical an of hint a shows 1572 thatSupernova discovered team the addition, In curve. light their of peak the at luminosity constant of because standardcandles as serving indicators, distance cosmological roleas important an play Further reading: Nature 4December:Vol. 456.pp.617-619 and NAOJ Nomoto), Ken’ichi by (lead IPMU of team the by conducted researchwas The a in used be can echoes light how established Subaru at study observational This the Tycho’s supernova belongs to the majority majority the to class ofnormalTypeIa. belongs supernova Tycho’s the that indicates lines orange and black the between agreement The (red)). subluminous bottom: (orange), normal middle: (blue), overluminous (upper:supernova Ia type overluminous and normal subluminous, of templates with ComparisonSN1572. Tycho’s of spectrum the show lines solid Black flux). is axis vertical and wavelength rest the is axis horizontal (the ■ echoes. light as confirmed were (yellow) lights optical the 24, September to 2008 August 23 from shifted apparently were regions emitting the Since 2008. in Earth at arrived and supernova the around cloud in 1572.Opticallight(yellow)wasscatteredbydust Earth at arrived (blue) light optical The supernova. ■ Figure 13: The spectrum of Tycho’s supernova Tycho’s of spectrum The 13: Figure Figure 12: The light echoes from Tycho’s from echoes light The 12: Figure aspects ofthisduality, whichisalsointeresting from mathematicalpointofview. various clarified also physicists and mathematician a of collaboration joint The investigation. of subject a also was and well, very understood yet not is itself duality geometry.The certain a of that and theory gauge certain a of space moduli mechanical quantum a between equivalence parameters oftheStandard Model. the of values calculate to way new a opened study This world. the in time first the for (Fig.14) Model Standard supersymmetric the of fields various and structures geometric between relation precise the determining in succeeded and “sheaves”, called objects mathematical of structure examinedF-theory, study to duality string a employed They Tokyo). (U. Yamazaki Masahito and Liverpool) (U. Tatar Radu Tokyo), (U. Hayashi Hirotaka with collaboration in problem, this tackle to cooperated IPMU at WatariTaizan physicist particle a and TodaYukinobu geometor algebraic An Model. Standard the of parameters the of predictions theoretical derive to order in physics, in observed freedom of degrees the and geometry between relation precise the understand to crucial is it and geometry, of fluctuations from originate leptons) and quarks as such (fields freedom of degrees dynamical the all F-theory, In them. of one is “F-theory” and proposed, been have theory superstring of formulations Various world. the over all scientists quantum fieldtheoriesingeneral. than powers predictive theoretical more have may and particles, elementary of theories field and gravity both accommodates that theory quantum a however,theory,is Superstring be. should parameters those of values the what about anything however,tell framework, not does theoretical a as general in theories field Quantum particles. various of masses and forces of strength control parameters these of Values parameters. 30 about and leptons) as and (such quarks fields various of terms in written theory field quantum of model a is which Model, Heterotic F-Theory Further reading: NuclearPhysicsB806(2009)224 an duality.implies theory It Heterotic--F called is study this in employed duality string The by investigation intense under is and yet, understood fully not is theory Superstring Standard the by described be to known are particles elementary all of Interactions pinch-point singularity. the at curve blue the intersecting curves red two are there that information the use to need only we There, figure). the in (blue curve complex a on sections holomorphic find to is which geometry, algebraic in problem easy an to problem this reducing by easier much made is wavefunctions mode point where a where point a near directions) horizontal two the (in space internal the of coordinates the over varying This axis) vertical the (in geometry. field Higgs the for original potential the of the behavior shows figure from determined is space internal the over varying potential the and term, potential a contains equation differential The leptons. and quarks of couplings Yukawa calculate to used are wavefunctions The space. internal the in wavefunctions massless-mode determine that equations differential to translated is ■ enhanced to enhanced Figure 14: Geometry of F-theory compactification F-theory of Geometry 14: Figure D D 7 . Practical calculation of the massless- the of calculation Practical . 5 singularity of the original geometry is is geometry original the of singularity

IPMU ANNUAL REPORT 2008 37 Research Highlight IPMU ANNUAL REPORT 2008 38 Research Highlight art computersimulationstudyonthelarge-scalestructureof universe. state-of-the- his for Physics Computational in Prize Scientist Young (IUPAP) Physics ■ the distributionofdarkmatter. identified successfully has and Telescope, Subaru the and Telescope Space Hubble the using observations led also has Takada relativity. of theory general Einstein’s by predicted phenomenon lensing gravitational the using matter dark probe to theoretical method a developed has He matter. dark the on work his for Award Astronomer ■ role inthefields. leading take to continue to expected are and research, theoretical fundamental in area related and theory field theory, gravity/space-time of area the in contribution significant made who those to given is prize This theory. superstring using interaction strong of correspondence” theory/gravity superstring gauge on based model chromodynamics quantum “holographic technique analysis an developed They University. Ibaraki of Sakai Tadakatsu with shared was It Foundation. Yukawa of Prize physics theoretical ■ theory andstringtheory. field quantum in method mathematical a developing in work his for Award Research Humboldt 2008 the of recipient a also was Ooguri theory. Hawking’s of reach the beyond are that blackholes small of properties study to geometry high-dimensional of forefront the and theory string used Vafa and Strominger, Ooguri, years. three every in once physics, and mathematics between connection the strengthen that works honor to 2008 in established was Prize Eisenbud AMS The 2008. January in (Harvard) Vafa Cumrun and Strominger Andrew (IPMU/Caltech), Ooguri Hirosi to Prize Eisenbud ■ Figure 17: Masahiro Takada received the Astronomical Society of Japan Young Japan of Society Astronomical the received Takada Masahiro 17: Figure Figure 18: Naoki Yoshida received the International Union of Pure and Applied and Pure of Union International the received Yoshida Naoki 18: Figure Figure 15: The American Mathematics Society awarded the inaugural Leonard inaugural the awarded Society Mathematics American The 15: Figure Figure 16: Shigeki Sugimoto was a co-recipients of the 2008 Toshiei Kimura Toshiei 2008 the of co-recipients a was Sugimoto Shigeki 16: Figure research fordetectingneutrinosfrominsidetheearth. the pioneering been also has Inoue neutrinos. of types different between difference mass the of determination precision highest world the to leading successfully reactors, power the from generated anti-neutrinos detecting for project KamLand of leader a been has He Oscillations”. Neutrino Reactor of Measurement “Precision ■ senior memberoftheKamiokandeandSuper-Kamiokandeexperiments. a been has He oscillations”. their and neutrinos solar of “Observation on contribution ■ Figure 19: Masayuki Nakahata received the 25th Inoue Prize for Science for his for Science for Prize Inoue 25th the received Nakahata Masayuki 19: Figure Figure 20: Kunio Inoue received the 2008 JSPS Prize for his contribution on contribution his for Prize JSPS 2008 the received Inoue Kunio 20: Figure

IPMU ANNUAL REPORT 2008 39 Research Highlight IPMU ANNUAL REPORT 2008 40 Research Highlight 7. Upgrade” “GADZOOKS! APotentialSuper-Kamiokande Feb 19,MarkVagins, UCIrvine Experiment” “Direct andIndirect DarkMatterSearch Feb 14,Yuki Shimizu,Waseda Univ. “Ultralight GravitinoattheLHC” Feb 13,KoichiHamaguchi,Univ. Tokyo conformal fieldtheory” “How toliftaconstructionbyHiroshi Inoseto Feb 12,KatrinWendland, Augsburg Univ. sequestering insupergravity models” “Moduli stabilization,F-termupliftingand Feb 6,Hiroyuki Abe,YITP galaxies atz “AGNs andsuppressed starformationinmassive Feb 1,MariskaKriek,PrincetonUniv. “The MassFunctionofLocalActiveBlackHoles” Feb 1,JennyGreene, PrincetonUniv. “BOSS” Jan 28,JimGunn,Princeton interference” “Discriminating spinthrough quantum Jan 16,MatthewBuckley, Berkeley/IPMU “Holography andEntanglementEntropy” Jan 10,Tadashi Takayanagi, KyotoUniv. “Structure FormationintheEarlyUniverse” Jan 9,NaokiYoshida, NagoyaUniv. energy” “Gravitational lensinganddarkmatter Jan 8,Takada Masahito,Tohoku Univ. “Deligne conjecture andtheDrinfelddouble” Kaledin,SteklovMathInst/Univ.Dec 10,Dmitry Tokyo andQCD” “String theory Oct 30,ShigekiSugimoto,IPMU symmetry” -categories related tohomologicalmirror “Some examplesoftriangulatedand/orA Oct 29,Hiroshige Kajiura,RIMSKyotoUniv. Gromov-Witten invariants” “Topics onstringtheory, mirror symmetry, and Oct 15,ShinobuHosono,Univ. Tokyo JFY2007

2.5” Seminars ∞ “Cosmology from spinningbranes” Mar 14,DamienA.Easson,Univ. Durham mathematics andtheoretical physics” “Geometric analysisandtheirapplicationsin Mar 10,Shing-Tung Yau, Harvard Univ. Explosions byOptical/NIRObservations” ofSupernova “Hunting fortheGeometry Mar 5,KeiichiMaeda,IPMU “Neutrino physicsprogram atKamLand” Feb 28,Alexandre Kozlov, Tohoku Univ. dimension” “Deformation ofBrody andmean curves Feb 27,MasakiTsukamoto, KyotoUniv. future colliderexperiments” “Testing supersymmetricneutrinomassmodelsat Feb 22,Werner Porod, Wuerzburg Univ. “More visibleeffectsofthehiddensector” Feb 21,DavidPoland,UCBerkeley Scattering Amplitudes” “Gauge Theory, GravityandTwistor String Feb 20,MohabAbouZeid,KEK moduli spacesofRiemannsurfaces” “Recursion relations onthe inintersectiontheory Apr 24,MotohicoMulase,UCDavis Littlest HiggsmodelwithT-parity atColliders” “Direct andIndirect search forsignalsofthe Apr 23,Chuan-RenChen,IPMU moduli spacesofRiemannsurfaces” on “Integrable systemsandintersectiontheory Apr 23,MotohicoMulase,UCDavis “Killing superalgebrasinsupergravity” Apr 16,JoseMFigueroa-O’Farrill, Univ. Edinburgh Dark MatterandAnisotropy” “Astrophysical Probe ofNewPhysics:Cosmological Apr 11,Shin’ichiro Ando,Caltech “Cosmological UnificationofStringTheories” Apr 9,SimeonHellerman,IAS “Lecture: (before Homotopytheory 1970)” Apr 8,15,22,May13,Akihiro Tsuchiya, IPMU redshift evolution” “Ensemble properties ofclustergalaxiesandtheir Apr 4,Yen-Ting Lin,Princeton Univ. JFY2008

IPMU ANNUAL REPORT 2008 41 Seminars IPMU ANNUAL REPORT 2008 42 Seminars Interpretation” Probe Cosmological (WMAP)Observations: “The 5-Year WilkinsonMicrowave Anisotropy Jun 11,Eiichiro Komatsu, Univ. Texas “Balanced Kahlermetricsandphysics” Jun 10,MichaelDouglas,RutgersUniv. “String compactificationandthelandscape” Jun 9,MichaelDouglas,RutgersUniv. “Indirect Signatures ofGravitinoDarkMatter” Jun 9,Alejandro Ibarra, DESY PartII” boundary “Phases ofN=2theoriesin1+1dimensionswith Jun 5,Kentaro Hori,Univ. Toronto anomaly equation” “On solutionstoWalcher’s extendedholomorphic Jun 4,Yukiko Konishi,KyotoUniv. from“Intersection theory dualityandreplica” Jun 2,ShinobuHikami,Univ. Tokyo Einstein geometry” “Quivers, branetilingsandtoricCalabi-Yau/Sasaki- May 29,MasahitoYamazaki, Univ. Tokyo with seesaw-inducedneutrinomasses” “Higgs bosonmassboundsintheStandard Model May 29,NobuchikaOkada,KEK “H3+ Liouvillerelation anditsapplications” May 28,Yasuaki Hikida,KEK and potentialfunctions” “Toric degenerationsofGelfand-Cetlinsystems May 21,KazushiUeda,OsakaUniv. ofQuillenmetrics” “A survey May 19,Jean-MichelBismut,Univ. Paris-Sud,Orsay “Derived categoriesinNoncommutativeGeometry” May 14,AlexeyBondal,Univ. Aberdeen “The hypoellipticLaplacian” May 12,Jean-MichelBismut,Univ. Paris-Sud,Orsay “Cosmogenic NeutrinosandtheHiResexperiment” May 12,KaiMartens,Univ. Utah “Limit stableobjectsonCalabi-Yau 3-folds” May 8,Yukinobu Toda, IPMU boundary” “Phases ofN=2theoriesin1+1dimensionswith Apr 30,Kentaro Hori,Univ. Toronto “AdS/CFT correspondence andIntegrablesystems” Jul 16,Kazuhiro Sakai,KeioUniv. “Drived HallalgebraI” Jul 14,JieXiao,FanXu,Tsinghua Univ. “Neutrino oscillationsinnon-sphericalsupernova” Jul 10,ShiouKawagoe,Univ. Tokyo manifolds” “On multiplieridealsheavesontoricFano Jul 3,Yuji Sano,IPMU successes andcurrent issues” Cosmological Hydrodynamic Simulations: “Galaxy Formationthrough CosmicTime using Jul 2,Kentaro Nagamine,Univ. Nevada entropy” “Quantum topologicalinvariantsandblackhole Jun 30,J.ManuelGarcia-Islas, Mexico andMailletformalism” “String theory Jun 26,Andrei Mikhailov, Caltech “Weak ScaleGravitinoDarkMatter” Jun 26,ShigekiMatsumoto,Toyama Univ. andMailletformalism” “String theory Jun 25,Andrei Mikhailov, Caltech “Spin foammodelsofquantumgravity” Jun 25,J.ManuelGarcia-Islas, Mexico boson mass” “The muong-2andtheboundsonHiggs Jun 24,MassimoPassera,INFN “IPMU, Mathematics,Physics,andme” Jun 20,H.Murayama,IPMU “Planar Ads/CFT: wrappingitup” Jun 19,SakuraSchafer-Nameki, Caltech “BPS Wall-crossing andHyperkahlerGeometry” Jun 19,AndyNeitzke,PrincetonUniv. andStringTheory” Quantum FieldTheory “Crossing thewall:overcoming anObstructionin Jun 18,AndyNeitzke,PrincetonUniv. “Hunting forPrimordial Non-Gaussianity” Jun 13,Eiichiro Komatsu,Univ. Texas in themodulispaceofabelianvarieties” “Generic NewtonpolygonsofEkedahl-Oortstrata Jun 12,ShushiHarashita,IPMU Cam toHSC” imaging intheextragalacticastronomy: Suprime- “Applications ofwideanddeep multi-waveband Aug 18,HisanoriFurusawa,NAOJ “One-Loop RiemannSurfacesinSchnablGauge” Aug 13,MichaelKiermaier, MIT “Introduction toDeligen-Lusztig theory” Aug 11,ShushiHarashita,IPMU on CY3-foldsandtheirwall-crossings” coherent“Counting invariantsofperverse systems Aug 4,Kentaro Nagao, KyotoUniv. and LogarithmicConformalFieldTheory” “Vertex OperatorAlgebrawithC2-finiteconditions Jul 31,Akihiro Tsuchiya, IPMU conjecture” “On aDrinfeldmodularanalogueofBeilinson’s Jul 30,SatoshiKondo,IPMU III” “Lie AlgebrasAssociatedwithDerivedCategories Jul 29,JieXiao,FanXu,Tsinghua Univ. “Symmetries andtheRiemannHypothesis” Jul 28,LinWeng, KyushuUniv. II” “Lie AlgebrasAssociatedwithDerivedCategories Jul 28,JieXiao,FanXu,Tsinghua Univ. Clustering asCluestotheirPhysicalNature” “Quasars from z=0toz=6:Demographicsand Jul 24,MichaelStrauss,PrincetonUniv. “Lie AlgebrasAssociatedwithDerivedCategoriesI” Jul 24,JieXiao,FanXu,Tsinghua Univ. expansion” blackholemerger:“Binary andthespin symmetry Jul 23,LathamBoyle,CITA conditions, andbootstraprelations” “Testing inflation:gravitationalwaves,consistency Jul 22,LathamBoyle,CanadianInstTheoAstr(CITA) “Drived HallalgebraIII” Jul 21,JieXiao,FanXu,Tsinghua Univ. “Drived HallalgebraII” Jul 18,JieXiao,FanXu,Tsinghua Univ. “Partition functionsfornon-commutativelattices” Jul 17,KyojiSaito,IPMU “Cosmology inwarpedextradimensions” Jul 17,KenjiKadota,Univ. Minnesota Measurements inClusters” “Combining Lensing,X-ray, andgalaxydynamic Oct 07,Doron Lemze,Tel Aviv “CP Violation fortheHeavenand Earth” Oct 02,George Hou, NTU and Lumps” “SO andUSpKählerHyperKählerQuotients Oct 02,SvenBjarkeGudnason,UPisa of vacuumenergy” signature“A possibleobservational oftheweight Oct 01,CosimoBambi,IPMU “The View from UChicago” Sep 25,SimonDedeo,UChicago “The PhenomenologyofGravity” Sep 24,SimonDedeo,UChicago “Effects ofparticleproduction duringinflation” Sep 22,AntonioEneaRomano,YITP “A HolographicDualofBjorkenFlow” Sep 19,ShinNakamura,CQUeST, SogangU “Holographic non-localoperators” Sep 18,ShunjiMatsuura,UTokyo/Perimeter Inst inflation” “What weknow(andmayeverknow)about Sep 18,BrianPowell,IPMU Generalized Landau-Yang Theorem” “Topological InteractionsattheLHCand Sep 17,JingShu,IPMU “Testing originofneutrinomassattheLHC” Sep 10,KaiWang, IPMU into thequantumStructure ofSpacetime-” “Black HoleEntropy -AWindow inStringTheory Sep 10,AtishDabholkar, UPari6 Cosmological Scenarios” “Abundance ofThermalRelicsinNon-standard Sep 9,MitsuruKakizaki,BonnU “The FZZ-DualityConjecture -AProof” Sep 3,Yasuaki Hikida,KEK “A SingularityProblem withf(R)DarkEnergy” Aug 28,Andrei Frolov, SimonFraserU “Mass andSpinatLHC” Aug 22,Yeong-Gyun Kim,KAIST “Where istheInformationinClusterLenses?” Aug 21,DavidM.Goldberg, Drexel U

IPMU ANNUAL REPORT 2008 43 Seminars IPMU ANNUAL REPORT 2008 44 Seminars “Predictions from theMultiverse” Nov 5,Lawrence Hall,UCBerkeley “Conjectures onmotives:caseofsimplethreefolds” Nov 5,Sergey Gorchinskiy, SteklovMathInst “The FermiGamma-raySpaceTelescope” Oct 30,Hiromitsu Takahashi, GLAST “Properties inHolographicQCD” ofBaryons Oct 29,ShigekiSugimoto,IPMU “Dunkl operatorsandquadraticalgebras” Oct 27,AnatoliKirillov, RIMSKyoto Schroedinger equation onthecircle” “Poisson groups and differential of Galoistheory Oct 27,MichaelSemenov-Tian-Shansk, UBourgogne darkmatter,baryons, andgravitationalwaves” from“Echoes ofsupersymmetry theearlyuniverse: Oct 23,AlexKusenko,UCLA correspondence” “A newdimensionfortheAdS/CFT Oct 22,DavidBerenstein, UCalifornia,SantaBarbara explosion ofsupernovae” “From thewhistleofakettletoasymmetric Waseda d’Astrophysique/ Foglizzo,Service Oct 22,Thierry andTopological“Quantum Crystals Strings” Oct 16,DomenicoOrland,IPMU processes athadron colliders” “Jet angularcorrelation invector-boson fusion Oct 15,KaoruHagiwara,KEK “Wall Crossing” Oct 14,MaximKontsevich,IHES production attheLHC” “Matching QCDradiationingluinoandsquark Oct 14,JohanAlwall,SLAC algebras” andvertexoperator “Conformal fieldtheory Oct 14,Akihiro Tsuchiya, IPMU Cluster MassProfiles” “Testing of LCDMwithSubaruObservations Oct 10,Tom Broadhurst, Tel Aviv “Results ontheproton structure from HERA” Oct 09,ShimaShimizu,ZEUS withinthesupernovaremnants”its survival “Formation ofdustinprimordial supernovaeand Oct 08,Takaya Nozawa,IPMU Evolution” “The Mass-DependentRoleof Mergers inGalaxy Dec 16,KevinBundy, UCBerkeley Gravitational LensinginCOSMOS” “Halo properties of Groups andClustersviaWeak Dec 16,AlexieLeauthaud,LBL Mission” Next GenerationX-ray/Gamma-raySatellite “Science andInstrumentationofASTRO-HMission: Dec 15,Hiro Tajima, SLAC “Immersed LagrangianFloertheory” Dec 11,ManabuAkaho,Tokyo MetU statefrom“The boundary openstringfields” Dec 3,Yuji Okawa,UTokyo theories” Calabi-Yau manifoldsfrom non-Abeliangauge “A pairofnon-birationalbutderivedequivalent Dec 1,Kentaro Hori,UToronto/IPMU “Groups ofintermediaterank” Nov 28,MikaelPichot,IPMU Multiple M2-branes” “Toward aProof ofMontonen-OliveDualityvia Nov 27,SeijiTerashima, YITP of links” “Quantum groups atroots ofunity andinvariants Nov 20,NicolaiReshetikhin,UCBerkeley/Amsterdam of theLARGEVolume Scenario” “Hierarchy Problems AnOverview inStringTheory: Nov 20,JoeConlon,Oxford “The DarkEnergy Puzzle” Nov 19,PisinChen,NTU/Stanford geometry” “Open stringsandnoncommutatiealgebraic Nov 17,DavidMorrison,UCSB “Modified gravityasanalternativetodarkenergy” Nov 10,KazuyaKoyama,Portsmouth Background asaBacklight?” “What canyoudowithCosmicMicrowave Nov 10,ShirleyHo,Princeton “Cosmological unificationofstringtheories” Nov 6,SimeonHellerman,IPMU from Direct DarkMatterDetectionData” “Identifying Weakly InteractingMassiveParticles Nov 6,Chun-LinShan,SeoulNU “CFT DualsforExtreme BlackHoles” Jan 29,Tatsuma Nishioka,KyotoU “The FirstBillionYears” Pisa Jan 27,Andrea Ferrara,ScuolaNormaleSuperiore, “Debris Disks” Jan 23,AmayaMoro-Martin, Princeton projective plane” “Moduli ofBridgelandsemistableobjectsonthe Ookawa,TitechJan 22,Ryo dark energy probe” “The SDSSQuasarLensSearch anditsuseasa Jan 22,MasamuneOguri,Stanford “On Harvey’s complex” curve Jan 16,KennethShackleton,IPMU “Planckian dissipation” Jan 15,Zaanen,Leiden “Hidden Charged DarkMatterandItsRelics” Jan 15,HaiboYu, UCIrvine holomorphic setting” “Fedosov quantizationinalgebraicand Kaledin,SteklovMathInst Jan 9,Dmitry Theories” “An IndexforNon-relativistic Superconformal Field Jan 8,Yu Nakayama,UCBerkeley the LHC” momenta andapplicationtospinmeasurement at “M Jan 8,KiwoonChoi,KAIST “Weak Lensingbylarge scalestructure” Jan 7,HenkHoekstra,Leiden “Journey Toward GravitationalWave Astronomy” Jan 5,SeijiKawamura,NAOJ “Brane Tilings andM2branes” Dec 24,AmihayHanany, ImperialCollege Field Theories” “New Developmentsind=4,N=2Superconformal Dec 24,Yuji Tachikawa, IAS solutions” ofsupersymmetricAdS “On thegeometry Dec 18,NakwooKim,KyungHeeU physics” problems inastrophysics, cosmologyandparticle “Big-Bang nucleosyntheisandahinttosolve Dec 18,KazunoriKohri,Lancaster T2 -assisted on-shellreconstruction ofmissing “The endofthecosmological constant problem!” Feb 27,NiayeshAfshordi, PerimeterInst Hall Effect” “Three StringyRealizationsofFractionalQuantum Feb 26,Wei Li,IPMU the conformalanomaly” “The cosmologicalconstantasamanifestationof Feb 26,FedericoUrban,UBC “Double CompactObjectBinaries” Feb 25,AshleyJ.Ruiter, NewMexicoStateU LOFAR” “Probing theEnd oftheUniverse’s DarkAgeswith Institute, Groningen Feb 24,SaleemZaroubi, KapteynAstronomical results” science drivers,challengesandsomepilotfacility “LOFAR -amajornewlowfrequency observatory: Kapteyn Institute,Groningen Feb 24,A.G.deBruyn,ASTRON,Dwingelooand surface” “0-dimensional cuspsoftheKahlermoduliaK3 Feb 19,ShouheiMa,UTokyo Colliders” “Supersymmetric DarkMatterinCosmologyandat Feb 18,FrankDanielSteffen,MaxPlanckInst “Supernova light” Feb 16,Sergei Blinnikov, ITEP prospects” “Reactor neutrinoexperimentsandfuture Feb 12,Yifang Wang, IHEP pairs” “R-axion: Anewphysicssignature involvingmuon Feb 11,Masahiro Ibe,SLAC andtheVery“String Theory EarlyUniverse” Feb 9,RobertBrandenberger, McGill Friedmann universe” “Self-similar growth ofblackholesinthe Feb 9,HidekiMaeda,Centro deEstudiosCientificos of space-timestructures” singleton physicsandnoncommutativeanalogues “The deformationphilosophyofquantization, Feb 5,DanielSternheimer, KeioU “Complementarity ofFuture DarkEnergy Probes” Feb 5,JiayuTang, IPMU “Black HolesandBlackfoldsinHigherDimensions” Feb 4,RobertEmparan,ICREA&Barcelona

IPMU ANNUAL REPORT 2008 45 Seminars IPMU ANNUAL REPORT 2008 46 Seminars acceleration theories” “Pulsars: excellentsystemsfortestingparticle Mar 16,KouichiHirotani, Nat’lTsing HuaU,Taiwan defects” “A holographicperspectiveonnon-relativistic Mar 12,Andreas Karch, Washington U Geometries” “AdS Vacua, AttractorMechanismandGeneralized Mar 5,Tetsuji Kimura,YITP “Precision Measurements atHadron Colliders” Mar 5,C.P. Yuan, MichiganStateU gas” “The stellarinitialmassfunctioninlowmetallicity Mar 4,SimonGlover, Heidelberg U for astroparticle” “A roadmap tothestars:towards aglobalstrategy Mar 2,Stavros Katsanevas,Paris Extra Dimensions” EvidenceforCosmological-Scale “Observational Feb 27,GhazalGeshnizjani,PerimeterInst “The Strong GravityTheorem” Mar 26,SimeonHellerman,IPMU Singularities” “Quantum ResolutionofCosmological Mar 26,NeilTurok, PerimeterInst phenomenology” “Splitting Kaluza-Kleinspectrumandits Mar 25,SeongChanPark,PMU for neutrinolessdoublebetadecayexperiments” “Development ofsegmentedgermaniumdetectors Mar 24,JingLiu,MaxPlanckInst “Dynamics ofHyperpolarized129XeProduction” Schrank,UUtah Mar 24,Geoffry algebra” “Introduction tothe2-categoricalhomological Mar 19,Hiroyuki Nakaoka,UTokyo potential” discovery electromagnetic calorimeterandearlyZ’toee “In situcommissioningoftheATLAS Mar 18,Pierre-Simon Mangeard, CPPM,Marseille 8. Moonshiney Conference inKashiwa May 22-24 JFY2008 Asian mathematiciansandtheoretical physicists Mar 20-22 Focus Week: NeutrinoMass Mar 17-21 IPMU OpeningSymposium Mar 11-12,2008 Focus week:LHCPhenomenology Dec 17-21,2007 JFY2007

Conferences New ParticlesattheLHC Focus Week: DeterminationofMassesandSpins March 16-20 inComplexGeometry Supersymmetry 4-9,2009 January Focus Week: MessengersofSupernovaExplosions November 17-21 manifolds A Workshop onMicro-local analysisonsymplectic September 16-18 Focus Week: QuantumBlackHoles September 12-16 Focus Week: LHCphysics June 23-27 the MoonshineyWorkshopatIPMU. of occasion the on (left) McKay John ■ Figure 21: John Conway (right) and (right) Conway John 21: Figure

IPMU ANNUAL REPORT 2008 47 Conferences IPMU ANNUAL REPORT 2008 48 Conferences 9. “New AnomaliesinTopological StringTheory” Hirosi Ooguri (2008.03.17 -19,YITP, KyotoU,Japan) Physics 30 Years ofMathematicalMethodsinHigh Energy “Gravitino andInflation” Fuminobu Takahashi (2008.03.12 -14,KEK,Japan) in theUniverse KEK CosmoGroup InauguralConference: Accelerators “Neutrino OscillationPhenomenology” Hitoshi Murayama (2008.03.17 -20,IPMU,Kashiwa,Japan) Focus weekonneutrinomass “Prospects forParticlePhysics” Hitoshi Murayama (2008.03.05 -07,Mito,Japan) Particle PhysicsatJ-PARC (NP08) The 4thInternationalWorkshop onNuclearand “ILC, Future ParticlePhysicsandCosmology” Hitoshi Murayama (2008.03.03 -06,Sendai,Japan) meeting onInternationalLinearCollider(TILC08) and DetectorWorkshop andGlobalDesignEffort Joint AsianCommitteeforFuture AcceleratorsPhysics “Models ofDarkMatter” Hitoshi Murayama (2008.2.06 -08,Padova,Italy) Workshop onEarlyUniverseThermometers gravitino problem” “Inflaton decayinsupergravity andthenew Fuminobu Takahashi (2007.12.10 -11,ICRR,Japan) GroupICRR Theory Workshop theory, revisited” “Meta-stable vacuainperturbedSeiberg-Witten Hirosi Ooguri (2007.12.07 -10,OsakaCityU,Osaka,Japan) Progress andStringTheory ofQuantumFieldTheory homotopy invariants” “Loop spacesofconfigurationandlink Toshitake Kohno (2007.11.05, SNU,Seoul,Korea) East AsianConference onAlgebraicTopology JFY2007 “Gravity wavesasaprobe ofthegravitinomass” Fuminobu Takahashi (2008.04.16, NAOJ,Japan) The 6thDECIGOWorkshop JFY2008

Conference Talks “Heterotic--F Duality Revisited” Theory Taizan Watari (2008.05.29, UPenn,Philadelphia, USA) String Phenomenology2008 “Perspectives inHolographicQCD” Shigeki Sugimoto (2008.05.28 -31,SNU,Seoul,Korea) Theory” 32nd JohnsHopkinsWorkshop “PerspectivesinString “Brane inflationinstringcosmology” Shinji Mukohyama “KamLAND results andprospects” Alexandre Kozlov (2008.05.23 -29,Sergiev Posad,Russia) QUARKS “Cosmological limitsonneutrinomass” Masahiro Takada (2008.05.19 -21,Kona,Hawaii,USA) Cosmology NearandFar:SciencewithWFMOS “Black HolesandtheFateofDeterminism” Hirosi Ooguri (2008.05.17, Pasadena,USA) Caltech AnnualSeminarDay Instantons” “Properties from ofBaryons D-branesand Shigeki Sugimoto (2008.05.15 -18,UMinnesota,Minneapolis,USA) Continuous AdvancesinQCD(CAQCD08) “Quantum Universe” Hitoshi Murayama (2008.05.16, Tokyo, Japan) UniversityofTokyo Colloquium “The Anthropic SolutiontotheStrong CPproblem” Fuminobu Takahashi “Brane inflationinstringcosmology” Shinji Mukohyama (2008.05.14, Nikko,Japan) Early Universe Japan-France JointWorkshop onCosmologyofthe “The NextTwenty Years inParticlePhysics” Hitoshi Murayama (2008.05.13, Wako, Japan) RIKEN NishinaCenterPhysicsColloquium “Big World ofLittleNeutrinos” Hitoshi Murayama (2008.05.01, Riverside,USA) UC RiversidePhysicsColloquium Energy” “Gravitational LensingandDarkMatter Masahiro Takada (2008.04.17, Daejeon,Korea) Korean PhysicsSocietyMeeting

2008

IPMU ANNUAL REPORT 2008 49 Conference Talks IPMU ANNUAL REPORT 2008 50 Conference Talks “Gravity inHiggsphase” Shinji Mukohyama (2008.06.23, ICG,Portsmouth,UK) Modified GravityonCosmological Scales “Impact oftheKamLANDExperiment” Hitoshi Murayama (2008.06.21, Sendai,Japan) for NeutrinoScience SymposiumofResearchThe 10thAnniversary Center asseenbyStringTheory” “Geometry Hirosi Ooguri (2008.06.21, Kyoto,Japan) Takagi Lectures, MathematicalSociety ofJapan “Non-Gaussianity from Symmetry” Fuminobu Takahashi “Gauge MediationMadeViable andGeneric” Hitoshi Murayama (2008.06.16 -21,Seoul,Korea) (SUSY08) and theUnificationofFundamentalInteractions The 16thInternationalConference onSupersymmetry “Supersymmetry” Hitoshi Murayama (2008.06.12 -14,Seoul,Korea) Advanced Study SUSY08 Pre-school Lectures atKorean Institutefor homotopy” “Braids, Drinfel’dassociatorandrational Toshitake Kohno (2008.06.10, Univ. deMontpellier, France) Braids, KnotsandApplications Holographic QCD” “Static Properties in andFormFactorsofBaryons Shigeki Sugimoto (2008.06.09 -27,Florence, Italy) Theories Non-Perturbative MethodsinStrongly CoupledGauge leptogenesis?” “Can weexperimentallytestseesawand Hitoshi Murayama (2008.06.02 -04,Melbourne,Australia) WorkshopMelbourne NeutrinoTheory Measurement UsingQuantumInterference” “Deciphering NewPhysicsThrough Spin Hitoshi Murayama (2008.06.02 -06,SantaBarbara,USA) “Anticipating PhysicsattheLHC” Kavli InstituteforTheoretical PhysicsConference “The Anthropic SolutiontotheStrong CPproblem” Fuminobu Takahashi (2008.06.02 -06,PerimeterInst,Canada) PASCOS-08 rational universal holonomymaps” “Bar Complexof Orlik-Solomonalgebraand Toshitake Kohno (2008.08.21, Toronto, Canada) Conference inHonourofPeterOrlik Talk”“Summary Hirosi Ooguri (2008.08.18 -23,CERN,Switzerland) Strings 2008 “Quantum Universe” Hitoshi Murayama (2008.08.19, Tokyo, Japan) Group ofJapan Young of School Summer Physicist Particle and Nuclear “From Collidersto theUniverse” Hitoshi Murayama (2008.08.10-17, Chi-Tou, Taiwan) Summer InstituteinPhenomenologyofParticlePhysics Bjorken Flow” “Dynamical Blackholeasaholographicdualof Shinji Mukohyama (2008.08.06, Fuji-Yoshida, Japan) Summer Institute2008 Cosmology” “Gravitational LensingandObservational Masahiro Takada (2008.08.03 -07,Kunming,China) Reagional Meeting The 10thAsia-PacificInternationalAstronomical Union “Neutrinos andCosmology(lecture)” Masahiro Takada Astronomy andAstrophysics (IUCAA), Pune,India) (2008.07.21 -08.31,InterUniversityCentre for Cosmology withtheCMBandLSS “The PhysicsbeyondtheLHC” Hitoshi Murayama (2008.07.27 -08.02,USA) The 13thAdvancedAcceleratorConceptsWorkshop Twist” andTopologicalBlack Holes,MoltenCrystals “Searching fortheLanguageofQuantumGravity: Hirosi Ooguri (2008.07.17, Aspen,USA) Aspen CenterforPhysics,Colloquium “Neutrinos intheStandard ModelandBeyond” Hitoshi Murayama (2008.06.30 -07.05,Valencia, Spain) Factories, SuperbeamsandBetabeams(NuFact08) The 10thInternationalWorkshop onNeutrino “Current Correlators forGeneralGaugeMediation” Hirosi Ooguri (2008.06.30 -07.04,Amsterdam, Holland) Eurostrings 2008 connection” “Braids, localsystemhomology andKZ Toshitake Kohno (2008.10.08, OsakaCityU,Japan) Intelligence ofLowDimensionalTopology 2008 “Japanese priorities” Hitoshi Murayama (2008.09.29 -30,Brussels,Belgium) European Priorities inAstroparticle Physics AdS/CFTCorrespondence” “Entanglement Entropy andPhaseTransition in Tadashi Takayanagi (2008.09.22 -26,KIAS,Korea) Recent DevelopmentsinString/MTheory “Theoretical ofneutrinophysics” overview Hitoshi Murayama (2008.09.17 -21,Beijing,China) Neutrino PhysicsandAstrophysics “Particle Physics” Hitoshi Murayama (2008.09.08 -13,MariaLaach,Germany) Maria LaachSummerschool “Fuzzy Ringfrom M2-braneGiantTorus” Tadashi Takayanagi (2008.09.12 -16,IPMU,Japan) Focus Week onQuantumBlackHoles for fundamentalphysicsandcosmology” “Neutrino andproton decay:Whatcanwelearn Hitoshi Murayama “GADZOOKS!” Mark Vagins “KamLAND generaltalk” Alexandre Kozlov (2008.09.11 -13,Paris,France) Neutrino detectors(NNN08) International Workshop onNextNucleondecayand “Origin andNature ofDustintheEarlyUniverse” Takaya Nozawa (2008.09.08 -12,Heidelberg, Germany) Cosmic Dust-Near&Far andleptogenesis” “Reconciling supersymmetry Hitoshi Murayama (2008.08.25 -29,Madison,USA) Cosmo08 inHolographicQCD” “Baryons Shigeki Sugimoto France) (2008.08.25 -09.05,EcoleNormaleSuperieure, Paris, theories decordes” Summer Institute“Theoriesdejauge,graviteet “Supersymmetry Breaking“Supersymmetry andCosmology” Hitoshi Murayama (2008.11.27 -29,Nanyang,Singapore) 75YearsTheory: sinceSolvay Particle Physics,Astrophysics andQuantumField “The FirstStars” Naoki Yoshida (2008.11.25, Honolulu,Hawaii,USA) University ofHawaiiColloquium “Neutrino MassandCosmology” Masahiro Takada (2008.11.18, InstAstrandAstrophy, Taiwan ) ASIAA Colloquium “Physics highlights&perspectives” Hitoshi Murayama (2008.10.28 -31,SLAC,Stanford, USA) Accelerators The 9thInternationalCommitteeforFuture “Formation ofPrimordial Stars” Naoki Yoshida matter powerspectrum” “The impactoffinite-massneutrinosonnonlinear Masahiro Takada (2008.10.26 -28,Seoul,Korea) Cosmology andStructure Formation “Groups ofintermediaterank” Mikael Pichot Germany) (2008.10.26 -11.01,Oberwolfach, Actions Von NeumannAlgebrasandErgodic ofGroup Theory “Testing OriginofNeutrinoMassattheLHC” Kai Wang (2008.10.20 -24,KavliInstBeijing,China) Going BeyondtheSM,Marching intotheLHCera “Studying theUniverseUnderground” Hitoshi Murayama (2008.10.19 -20,Oakland,USA) APS DivisionofNuclearPhysicsAnnualMeeting “Studying theUniverseUnderground” Hitoshi Murayama New York, USA) (2008.10.16 -17,Brookhaven NationalLaboratory, Grand Unification(UDiG) Workshop onUnderground DetectorsInvestigating “The FirstStars” Naoki Yoshida (2008.10.12, Beijing,China) New Vision 400

IPMU ANNUAL REPORT 2008 51 Conference Talks IPMU ANNUAL REPORT 2008 52 Conference Talks “GUT Symmetry Breaking“GUT Symmetry Revisited” Taizan Watari (2009.01.27, Heidelberg, Germany) VIPAC meeting problem ofthecosmologicalconstant” toinvestigatethe “Strange stars:alaboratory Cosimo Bambi (2009.01.19 -03.13,Arcetri, Florence, Italy) New HorizonsforModernCosmology “Formation ofPrimordial StarsandBlackholes” Naoki Yoshida (2009.1.15, Tsukuba, Japan) Workshop onEarlyStructure Formation “Cosmology withWFMOSSurvey” Masahiro Takada (2009.01.14 -16,NAOJ,Tokyo, Japan) 2008 SubaruUsers’Meeting “AdS/CFT anditsapplication” Shigeki Sugimoto (2008.12.25 -26,KyushuU,Fukuoka,Japan) Workshop onQCDPhaseStructure and ATIC/PPB-BETS anomaly” “Decaying hiddengaugebosonandthePAMELA Fuminobu Takahashi (2008.12.24, Waseda U,Tokyo, Japan) Cosmic-Ray Electron andPositron Workshop “Formation ofPrimordial Stars” Naoki Yoshida (2008.12.16, Boston,USA) ITC Colloquium,Harvard University “Cosmic raysfrom darkmatter” Fuminobu Takahashi (2008.12.08 -09,ICRR,Japan) WorkshopICRR Theory “Properties inholographicQCD” ofBaryons Shigeki Sugimoto (2008.12.06 -13,Pondicherry, India) Indian StringsMeeting2008 “The BigWorld ofLittleNeutrinos” Hitoshi Murayama (2008.11.03, AnnArbor, USA) University ofMichiganPhysicsColloquium “Subaru Weak LensingStudyofGalaxyClusters” Masahiro Takada (2008.12.02, Pasadena,USA) Colloquium atCarnegieObservatory “Cosmic-ray positrons from decayingdarkmatter” Fuminobu Takahashi Germany) (2008.12.01 -04,Max-PlanckInstitute,Garching, Excellence ClusterScienceWeek “Formation ofprimordial starsandblackholes” Naoki Yoshida (2009.3.23, Austin,USA) Beatrice M.Tinsley MemorialLecture compactification” “From recent developmentsinF-theory Taizan Watari (2009.03.09, YITP, Kyoto,Japan) 16th YKISsymposium “Non-Gaussianity asaprobe oftheearlyUniverse” Fuminobu Takahashi (2009.03.03 -06,KEK,Japan) Phenomenology (KEKPH09) MeetingonParticlePhysics KEK AnnualTheory “Higgs phaseofgravity” Shinji Mukohyama (2009.02.23 -24,Kyoto,Japan) Lecture SeriesatYITP topics” “Cosmology basedonsupergravity andrelated Fuminobu Takahashi (2009.02.18 -20,Kinosaki,Japan) String-Cosmology Workshop “AdS/CFT andChern-SimonsGaugeTheory” Tadashi Takayanagi (2009.02.18 -21,KeioU,Tokyo, Japan) andPhysics Geometry International Workshop onNoncommutative Formation” “Supercomputer SimulationsofCosmicStructure Naoki Yoshida (2009.2.16, Kashiwa,Japan) Supercomputing inSolidStatePhysics inflaton” “The etaproblem andinflationwithHubblemass Damien Easson (2009.02.16 -19,YKIS,Kyoto,Japan) Progress inParticlePhysics2008 MeltingandQuantumCalabi-Yau”“Crystal Hirosi Ooguri (2009.02.12, SantaBarbara,USA) Fundamental AspectsofSuperstringTheory “Yukawa CouplingsinF-theory” Taizan Watari (2009.02.03, DESY, Hamburg, Germany) GUT’s inStrings “The BigWorld ofLittleNeutrinos” Hitoshi Murayama (2009.01.30, Chicago,USA) Northwestern UniversityColloquia 10. M. Fujii,Kyoto(Japan), 08/3/11-3/11 T. Deguchi,Ochanomizu(Japan), 08/3/11-3/11 J. Daniel,Kobe(Japan),08/3/11 -3/11 M. Bando,Aichi(Japan),08/3/11 -3/11 M. Abou,KEK(Japan),08/3/11 - 3/11 Y. Abe,Cereja Tech Co.(Japan),08/3/11-3/11 D. Easson,Durham(UK),08/3/10 -3/12 J. Ellis,CERN(Switzerland),08/3/10-3/12 R.J. Gaitskell,Brown (US),08/3/10-3/15 Y.K. Kim,Chicago/Fermilab(US),08/3/10-3/12 M. Yamashita, ICRRTokyo (Japan),08/3/10-3/10 K. Uzawa,KwanseiGakuin(Japan),08/3/10-3/10 N. Tominaga, NAOJ(Japan),08/3/10-3/10 F. Scardigi, YITPKyoto(Japan),08/3/10-3/10 D. Perret-gallix, FJPPL/IN2P3/CNRS (France),08/3/10-3/10 K. Nakamura,SoukendaiNAOJ(Japan),08/3/10-3/10 E. Nakamura,Tokyo (Japan),08/3/10-3/10 S. Nagataki,YITPKyoto(Japan),08/3/10-3/10 S. Miyoki,ICRRTokyo (Japan),08/3/10-3/10 K. Matsumoto,KEK(Japan),08/3/10-3/10 T. Kawano,Tokyo (Japan),08/3/10-3/10 S. Hamamoto,Toyama (Japan),08/3/10-3/10 H. Goto,KEK(Japan),08/3/10-3/10 M. Dilworth,NSFTokyo Office(Japan),08/3/10-3/10 J. Siegrist,LBNL(US),08/3/9-3/12 D.J. Gross, UCSB(US),08/3/9-3/15 S.D.M. White,MaxPlanck(Germany),08/3/9-3/14 G.F. Giudice,CERN(Switzerland),08/3/9-3/14 S.T. Yau, Harvard (US),08/3/9-3/13 T. Dimofte,Caltech(US),08/3/8-3/16 K. Jacobs,Freiburg (Germany),08/3/8 -3/14 S. Katsanevas,Paris(France),08/3/8-3/12 A.B. McDonald,Queens(Canada),08/3/4-3/14 A. Slosar, LBNL(US),08/3/1-3/20 F. Urban,UBC(Canada),08/2/23-3/1 C. Belzynski,NewMexico(US),08/2/23-2/23 A. Ruiter, NewMexico(US),08/2/23-2/25 W. Porod, Wuerzburg (Germany),08/2/19-2/24 D. Poland,UCBerkeley(US),08/2/18-2/23 Y. Nomura,UCBerkeley(US),08/2/18-2/23 M. Vagins, (US),08/2/18-2/20 UCIrvine J. Gunn,Princeton(US),08/1/27-08/2/2 V. Rentala,UCBerkeley(US),08/1/26-4/16 E. Turner, Princeton(US),08/1/26 -2/5 M. Perelstein, Cornell(US),07/12/17-12/20 S.C. Park,Seoul(Korea), 07/12/17-12/20 S. Okada,Kobe(Japan),07/12/17-12/20 P. Mieda,Harvard (US),07/12/17-12/20 K. Mawatari,KIAS(Korea), 07/12/17-12/20 T. Kamon,Texas A&M(US),07/12/17-12/20 Y. Sumino,Tohoku (Japan),07/12/17-12/19 S. Schumann,Edinburgh (UK),07/12/17-12/19 C.P. Yuan, MichiganState(US),07/12/17-12/23 Q. Li,Karlsruhe(Germany),07/12/16-12/21 T. Lari,INFNMilano(Italy),07/12/16-12/22 S.H. Zhou,Penking(China),07/12/16-12/21 G. Polesello,INFNPavia(Italy),07/12/15-12/22 D. Kaledin,SteklovInst(Russia),07/12/10-12/10 Y.G. Kim,KAIST(Korea), 07/12/6-12/21 H. Kajiura,RIMSKyoto(Japan),07/10/29-10/29 JFY2007

Visitors M. Yamazaki, Tokyo (Japan),08/3/11 -3/11 M. Yamaguchi, Tohoku (Japan),08/3/11-3/11 M. Yamanaka, Saitama(Japan),08/3/11 -3/11 Y. Yabu, Kyoto(Japan),08/3/11-3/11 T. Watari, Tokyo (Japan),08/3/11 -3/11 K. Usui,Tokyo (Japan), 08/3/11-3/11 T. Uematsu,Kyoto(Japan),08/3/11 -3/11 T. Tsuboi, Tokyo Komaba(Japan),08/3/11-3/11 D. Tarama, Kyoto(Japan),08/3/11-3/11 R. Tanaka, Okayama(Japan),08/3/11-3/11 Y. Takeuchi, ICRRTokyo (Japan),08/3/11-3/11 K. Takenaga, Tohoku (Japan),08/3/11-3/11 K. Takemura, Yokohama CityU(Japan), 08/3/11-3/11 M. Tada, SEIKOEG&GCo.(Japan),08/3/11-3/11 S. Sugimoto,Nagoya(Japan),08/3/11-3/11 D. Sternhaimer, Bourgogne (France),08/3/11-3/11 K. Shackleton,Titech (Japan),08/3/11-3/11 M. Seta,Tsukuba (Japan),08/3/11-3/11 H. Sekiya,ICRRTokyo (Japan),08/3/11-3/11 H. Sato,HyogoUofEdu(Japan),08/3/11-3/11 K. Sakai,Tokyo Komaba(Japan),08/3/11-3/11 H. Omori,Tokyo (Japan),08/3/11-3/11 Y. Okochi,Caltech(US),08/3/11-3/11 K. Okamura,Tokyo (Japan),08/3/11-3/11 G. Novichikov, Keio(Japan),08/3/11-3/11 H. Naruse,Okayama(Japan),08/3/11-3/11 N. Yoshida, Nagoya(Japan),08/3/11-3/11 S. Nakamura,Tohoku (Japan),08/3/11-3/11 K. Nagano,KEK(Japan),08/3/11-3/11 M. Nagai,ICRRTokyo (Japan),08/3/11-3/11 J. Murakami,Waseda (Japan),08/3/11-3/11 S. Morita,Tokyo Komaba(Japan),08/3/11-3/11 K. Mizutani,Saitama(Japan),08/3/11-3/11 T. Miwa,Titech (Japan),08/3/11-3/11 T. Matsuki,Tokyo Kasei(Japan),08/3/11-3/11 C. Matsui,Tokyo (Japan),08/3/11-3/11 T. Kugo,YITPKyoto(Japan),08/3/11-3/11 M. Kotani,Tohoku (Japan),08/3/11-3/11 K. KonichiKohki,Tokyo (Japan),08/3/11-3/11 C. Kobayashi,NAOJ(Japan),08/3/11-3/11 K. Kiyohara,Okayama(Japan),08/3/11-3/11 Y. Kitazawa,KEK(Japan),08/3/11-3/11 Y. Kikukawa,Tokyo (Japan),08/3/11-3/11 Y. Kawahigashi,Tokyo Komaba(Japan),08/3/11-3/11 S. Kasuya,Kanagawa(Japan),08/3/11-3/11 T. Kalman,Tokyo Komaba(Japan),08/3/11-3/11 F. Kajino,Konan(Japan),08/3/11-3/11 K. Iwasaki,Titech (Japan),08/3/11-3/11 K. Ito,Titech (Japan),08/3/11-3/11 S. Iso,KEK(Japan),08/3/11-3/11 M. Ishida,Meisei(Japan),08/3/11-3/11 N. Ikeda,Ritsumeikan(Japan),08/3/11-3/11 S. Ichinose,Shizuoka(Japan),08/3/11-3/11 K. Ichikawa,ICRRTokyo (Japan),08/3/11-3/11 J. Hisano,ICRRTokyo (Japan),08/3/11-3/11 T. Hirayama,Nat’lCtrTheoSci(Taiwan), 08/3/11-3/11 M. Hayashi,NAOJ(Japan),08/3/11-3/11 H. Hata,Ochanomizu(Japan),08/3/11-3/11 K. Hasegawa,Tohoku (Japan),08/3/11-3/11 R. Goto,Osaka(Japan),08/3/11-3/11 A. Gerard, ChengKung(Taiwan), 08/3/11-3/11 K. Fukaya,Kyoto(Japan),08/3/11-3/11

IPMU ANNUAL REPORT 2008 53 Visitors IPMU ANNUAL REPORT 2008 54 Visitors A. Ibarra,DESY (Germany), 08/6/9-6/9 M. Douglas,Rutgers(US),08/6/7 -6/11 J.W. Song,Caltech(US),08/6/6-6/26 C.S. Park,Caltech(US),08/6/6- 6/26 K. Hori,Toronto (Canada),08/5/29 -6/8 N. Okada,KEK(Japan),08/5/29 -5/29 E.L. Turner, Princeton(US),08/5/28-6/12 H. Yamada, Hitotsubashi(Japan),08/5/22-5/25 T. Takebe, Ochanomizu (Japan),08/5/22-5/24 S. Robert,free writer (Canada),08/5/22-5/24 K. Naoi,Tokyo Komaba(Japan),08/5/22-5/24 I. Nakamura,Hokkaido(Japan),08/5/22-5/24 A. Munemasa,Tohoku (Japan),08/5/22-5/24 A. Matsuo,Tokyo Komaba(Japan),08/5/22-5/24 S. Kondo,Nagoya(Japan),08/5/22-5/24 M. Kitazume,Chiba(Japan),08/5/22-5/24 Y. Kawahigashi,Tokyo Komaba(Japan),08/5/22-5/24 K. Ishihara,Saitama(Japan),08/5/22-5/24 K. Harada,OhioState(US),08/5/22-5/24 M. Fujii,Kyoto(Japan),08/5/22-5/24 K. Maehata,ImageMissionCo.(Japan),08/5/22-5/22 H. Shimakura,AichiUofEdu(Japan),08/5/21-5/24 H. Yamauchi, AichiUofEdu(Japan),08/5/21-5/24 J.F. Duncan,Harvard (US),08/5/21-5/26 T. Basak,Chicago(US),08/5/21-5/25 C.H. Lam,Taiwan (Taiwan), 08/5/21-5/24 R.L. Griess,Michigan(US),08/5/21-5/24 J. Conway, Princeton(US),08/5/21-5/24 K. Ueda,Osaka(Japan),08/5/21-5/21 J.M. Bismut,Paris-SudOrsay(France),08/5/19-5/19 J. McKay, Concordia (Canada),08/5/18-5/24 A. Bondal,Aberdeen (UK),08/5/14-5/16 J.M. Bismut,Paris-SudOrsay(France),08/5/12-5/12 K. Martens,Utah(US),08/5/11-5/16 K. Hori,Toronto (Canada),08/4/24-5/6 M. Mulase,UCDavis(US),08/4/23-4/24 J. Figueroa-O’Farrill, Edinburgh (UK), 08/4/16-4/16 S. Ando,Caltech(US),08/4/11-4/11 Y.T. Lin,Princeton(US),08/4/3-4/6 JFY2008 S.J. Rey, Seoul(Korea), 08/3/20-3/23 P.J. Yi, KIAS(Korea), 08/3/20-3/22 A. Sen,Harish-ChandraInst(India),08/3/20-3/22 K. Liu,UCLA(US),08/3/20-3/22 A. Dhar, TIFR(India),08/3/20-3/22 K. Hori,Toronto (Canada),08/3/19-3/23 Y.G. Oh,Wisconsin(US),08/3/19-3/22 B. Kim,KIAS(Korea), 08/3/19-3/22 P. DiBari,INFNPadova(Italy),08/3/17-3/20 V. Rodin,Tuebingen (Germany),08/3/16-3/22 G.G. Raffelt,MaxPlanck(Germany),08/3/16-3/22 A. Giuliani,INFNMilano(Italy),08/3/16-3/21 E. Pierpaoli,USouthernCal(US),08/3/15-3/23 H. Robertson,Washington (US),08/3/15-3/21 A. Kusenko,UCLA(US),2008/3/14-3/25 D.R. Morrison,UCSB(US),08/3/12-3/15 N. Reshetikhin,UCBerkeley(US),08/3/12-3/14 R. Peccei,UCLA(US),08/3/12-3/14 S. Petcov, SISSA(Italy),08/3/12-4/18 K. Yonekura, Tokyo (Japan),08/3/11-3/11 M. Strauss,Princeton (US),08/7/22-7/26 R. Lupton,Princeton(US),08/7/22 -7/26 L. Boyle,Toronto (Canada),08/7/21 -7/28 Y. Okawa,Tokyo (Japan),08/7/21-7/22 M. Kiermaier, MIT(US),08/7/20-8/14 K. Kadota,Minnesota(US),08/7/16 -7/18 K. Sakai,Keio(Japan),08/7/16- 7/16 S. Kawagoe,Tokyo (Japan),08/7/10-7/10 M. Kiermaier, MIT(US),08/7/7-7/14 F. Xu,Tsinghua (China),08/7/5-8/4 J. Xiao,Tsinghua (China),08/7/5-8/4 J.M. Garcia-Islas, Nat’l Auton(Mexico),08/6/25-6/25 M. Passera,INFN(Italy),08/6/24-6/24 Y. Yonekura, Tokyo (Japan),08/6/23-6/27 M. Takeuchi, Kyoto&KEK(Japan),08/6/23-6/27 T. Takayama, ICRRTokyo (Japan),08/6/23-6/27 W. Sreethawong, KEK(Japan),08/6/23 -6/27 T. Shimada,Meiji(Japan),08/6/23-6/27 T. Sekiguchi,ICRRTokyo (Japan),08/6/23-6/27 K. Sakurai,Nagoya(Japan),08/6/23-6/27 F. Rikkert,Louvain(Belgium),08/6/23-6/27 T. Okada,ICRRTokyo (Japan),08/6/23-6/27 K. Nakamura,ICRRTokyo (Japan),08/6/23-6/27 E. Nakamura,Tokyo (Japan),08/6/23-6/27 M. Nagai,KEK(Japan),08/6/23-6/27 S. Matsumoto,Toyama (Japan),08/6/23-6/27 B. Jager, KEK(Japan),08/6/23-6/27 K. Igi,RIKEN(Japan),08/6/23-6/27 J. Hisano,ICRRTokyo (Japan),08/6/23-6/27 K. Hiramatsu,Soukendai(Japan),08/6/23-6/27 B. Gong,ChineseAcadSci(China),08/6/23-6/27 M. Asano,ICRRTokyo (Japan),08/6/23-6/27 A. Akeroyd, ChenKung(Taiwan), 08/6/23-6/27 S. Dutta,Delhi(India),08/6/23-6/26 S. Bornhauser, Bonn(Germany),08/6/23-6/27 J.G. Wacker, SLAC(US),08/6/23-6/27 E.K. Park,Florida(US),08/6/23-6/27 T. Okui,JHopkins(US),08/6/23-6/27 C. Lester, Cambridge(UK),08/6/23-6/27 T. Lari,INFNMilano(Italy),08/6/23-6/27 R. Kitano,LosAlamos(US),08/6/23-6/27 Y.G. Kim,KAIST(Korea), 08/6/23-6/27 I.W. Kim,Seoul (Korea), 08/6/23-6/27 R. Frederix, Louvain(Belgium),08/6/23-08/6/27 P. Fox,Fermilab(US),08/6/23-6/27 S.P. Das,Bonn(Germany),08/6/23-6/27 H.C. Cheng,UCDavis(US),08/6/23-6/27 R. Cavanauch,Florida(US),08/6/23-6/27 M. Chun,KavliFoundation(US),08/6/23-6/23 D. Auston,KavliFoundation(US),08/6/23-6/23 K. Takahashi, KEK(Japan),08/6/22-6/27 T. Moroi, Tohoku (Japan),08/6/22-6/27 S. Hellerman,Princeton(US),08/6/21-6/24 D. Nitta,Tohoku (Japan),08/6/17-6/19 S. Schfer-Nameki, Caltech (US),08/6/17-7/3 A. Mikhailov, Caltech(US),08/6/17-7/1 Y. Watanabe, Texas (US),08/6/16 -6/20 K. Nagamine,Nevada(US),08/6/16-8/15 K. Hori,Toronto (Canada),08/6/14-6/17 A. Neitzke,Princeton(US),08/6/12-6/25 M. Yamazaki, Tokyo (Japan),08/6/9-6/27 E. Komatsu,Texas (US),08/6/9-6/20 J. Nishimura,KEK (Japan),08/9/12-9/17 M. Natsuume,KEK(Japan),08/9/12 -9/17 M. Nakashima,Tokyo (Japan),08/9/12-9/17 Y. Michishita,Kagoshima(Japan),08/9/12-9/17 D. Kabat,Columbia(US),08/9/12 -9/17 S. Iso,KEK(Japan),08/9/12-9/17 T. Ishii,Osaka(Japan),08/9/12 -9/17 Y. Hyakutake,Osaka(Japan),08/9/12-9/17 K. Hashimoto,RIKEN(Japan),08/9/12-9/17 S. Nakamura,Hanyang(Korea), 08/9/11-9/19 Y. Hikida,KEK(Japan),08/9/11-9/17 P. Decowski,LBNL(US),08/9/11-9/15 Y. Efremenko, Tennessee (US),08/9/11-10/2 K. Hotta,Hokkaido(Japan),08/9/11-9/16 H. Goto,KEK(Japan),08/9/11-9/16 A. Rosly, ITEP(Russia),08/9/11-10/22 M. Rangamani,Durham(UK),08/9/11-9/17 G. Mandal,TIFR(India),08/9/11-9/17 F.L. Lin,Taiwan (Taiwan), 08/9/11-9/17 V. Hubeny, Durham(UK),08/9/11-9/17 A. Dabholkar, Paris(France),08/9/11-9/17 S. Mukhi,TIFR(India),08/9/11-9/16 S. Moriyama,Nagoya(Japan),08/9/11-9/16 W.D. Ruan,KAIST (Korea), 08/9/10-9/17 M. Kakizaki,Bonn(Germany),08/9/9-9/9 M. Yamazaki, Tokyo (Japan),08/9/8-9/16 N. Iizuka,UCSB(US),08/9/7-9/20 A. Kuznetsov, SteklovMathInst(Russia),08/9/3-9/11 Y. Hikida,KEK(Japan),08/9/3-9/3 S. Freedman, UCBerkeley(US),08/9/2-9/16 K. Yoshioka, Kobe(Japan),08/9/1-9/5 H. Uehara,Tokyo Met(Japan),08/9/1-9/5 M. Sakurai,Tokyo (Japan),08/9/1-9/5 S. OkuharaSaki,Tokyo Met(Japan),08/9/1-9/5 R. Okawa,Titech (Japan),08/9/1-9/5 M. Kobayashi,Tokyo Met(Japan),08/9/1-9/5 A. Takahashi, Osaka(Japan),08/9/1-9/5 V. Przyjalkowski,SteklovMathInst(Russia),08/9/1-9/7 M. Perling,Bochum(Germany),08/9/1-9/6 S. Galkin,SteklovMathInst(Russia),08/9/1-9/6 K. Altmann,Berlin(Germany),08/9/1-9/6 B. Kim,KIAS(Korea), 08/9/1-9/5 H. Kajiura,Chiba(Japan),08/9/1-9/5 M. Verbitsky, Moscow(Russia),08/9/1-09/2/28 C. Walter, Duke(US),08/8/28-9/16 A. Frolov, SimonFraser(Canada),08/8/28-8/28 E. Kearns,Boston(US),08/8/24-8/31 Y.G. Kim,KAIST(Korea), 08/8/22-8/22 H. Furusawa,NAOJ(JapanHawaii),08/8/18-8/20 B.K. Fujikawa,LBNL(US),08/8/17-9/21 D. Goldberg, Drexel (US),08/8/15-8/31 D.F. Gao,Tronto (Canada),08/8/6-11/30 I. Zhdanovskiy, Moscow(Russia),08/8/4-8/31 A. Bondal,Aberdeen (UK),08/8/4-11/30 K. Hori,Toronto (Canada),08/7/29-10/31 W. Lin,Kyushu(Japan),08/7/28-7/28 H. Sugiyama,SISSA(Italy),08/7/25-8/10 K. Oda,Osaka(Japan),08/7/23-7/23 K. Izumi,Kyoto(Japan),08/7/23-7/23 F. Mullally, Princeton(US),08/7/22-7/28 C. Loomis,Princeton(US),08/7/22-7/28 S. Bickerton,Princeton(US),08/7/22-7/28 S. Pilansky, KomabaTokyo (Japan),08/9/12-9/17 Y. Okawa,Tokyo (Japan),08/9/12-9/17 J. Conlon,Cambridge (UK),08/11/1-11/15 H. Takahashi, Hiroshima (Japan),08/10/30-10/30 M. Semenov-Tian-Shansky, Bourgogne (France),08/10/26-10/27 A. Kirillov, RIMSKyoto (Japan),08/10/26-10/27 d’AstroH. Foglizzo,Service Phys(France),08/10/22 -10/22 D. Bernstein,UCSB(US),08/10/22 -10/22 A. Kusenko,UCLA(US),08/10/16 -12/13 M. Kontsevich,IHES(France),08/10/14-10/14 Y.K. Kim,Chicago/Fermilab(US),08/10/14-10/14 J. Alwall,Stanford (US), 08/10/13-12/19 S. Shimizu,DESY(Germany),08/10/9-10/9 S. Gorchinskiy, SteklovMathInst(Russia),08/10/6-11/7 W.S. Hou,Taiwan (Taiwan), 08/10/2-10/2 S.B. Gudnason,Pisa(Italy),08/10/2-10/2 D. Lemze,Tel Aviv (Israel),08/9/28-10/15 T. Broadhurst, Tel Aviv (Israel),08/9/28-10/15 E.L. Turner, Princeton(US),08/9/27-10/12 A.E. Romano,YITPKyoto(Japan),08/9/22-9/22 S. Dedeo,Chicago(US),08/9/19-10/10 Y. Voglaine, Louvain(Belguim),08/9/16-9/18 S. Tsuchiura, RIMSKyoto(Japan), 08/9/16-9/18 D. Sternhaimer, Bourgogne (France),08/9/16-9/18 N. Sawada,Tsukuba (Japan), 08/9/16-9/18 Y. Saito,Tokyo (Japan),08/9/16-9/18 R. Ohkura,Titech (Japan),08/9/16-9/18 S. Naito,Tsukuba (Japan), 08/9/16-9/18 K. Nagao,Kyoto(Japan),08/9/16-9/18 S. Kito,RIMSKyoto(Japan),08/9/16-9/18 N. Enomoto,RIMSKyoto(Japan),08/9/16-9/18 S. Ariki,RIMSKyoto(Japan),08/9/16-9/18 T. Kuwabara,RIMSKyoto(Japan),08/9/16-9/18 R. Kodera,Tokyo (Japan),08/9/16-9/18 T. Nishioka,Kyoto(Japan),08/9/13-9/16 B. Leclerc, Caen(France),08/9/13-9/20 T.S. Tai, Riken(Japan),08/9/12-9/18 S. Matsuura,Tokyo (Japan),08/9/12-9/17 T. Azeyanagi,Kyoto(Japan),08/9/12-9/17 Y. Akamatsu,Tokyo (Japan),08/9/12-9/17 M. Yoshimatsu, Tokyo (Japan),08/9/12-9/16 S. Yokoyama, Tokyo (Japan),08/9/12-9/16 N. Yamamoto, Tokyo (Japan),08/9/12-9/16 K. Umetsu,Nihon(Japan),08/9/12-9/16 Y. Tsuchiya, Tokyo (Japan),08/9/12-9/16 H. Tanaka, Tokyo (Japan),08/9/12-9/16 Y. Sumitomo,KEK(Japan),08/9/12-9/16 T. Sugawa,Osakacity(Japan),08/9/12-9/16 T. Matsuo,Tsukuba (Japan),08/9/12-9/16 K. Matsumoto,KEK(Japan),08/9/12-9/16 N. Manabe,Soukendai(Japan),08/9/12-9/16 Y. Kitazawa,KEK(Japan),08/9/12-9/16 T. Kikuchi,Kyoto(Japan),08/9/12-9/16 A. Hosoya,Titech (Japan),08/9/12-9/16 M. Honda,Soukendai(Japan),08/9/12-9/16 S. Hikami,Tokyo (Japan),08/9/12-9/16 K. Hasebe,Takuma-ct (Japan),08/9/12-9/16 M. Fujita,Kyoto(Japan),08/9/12-9/16 T. Azuma,Setsunan(Japan),08/9/12-9/16 K. Shirokawa, AcademiaSinicaTaiwan (Taiwan), 08/9/12-9/17 N. Shiiki,Tokyo (Japan),08/9/12-9/17 Y. Sekino,OkayamaInstQuantumPhys(Japan),08/9/12-9/17

IPMU ANNUAL REPORT 2008 55 Visitors IPMU ANNUAL REPORT 2008 56 Visitors L. Martucci,LMU München(Germany),09/1/5- 1/8 U. Lindstrom, Uppsala(Sweden),09/1/5-1/8 A. Tomasiello, Harvard (US),09/1/5 -1/8 R. Goto,Osaka(Japan),09/1/5 - 1/8 A. Fujiki,Osaka(Japan),09/1/5 - 1/8 G. Cavalcanti,Utrecht (Netherland),09/1/5-1/8 K. Choi,Kaist(Korea), 09/1/5-1/18 L. Ornea,Bucharest (Romania),09/1/5-1/17 H. Hoekstra,Leiden(Netherland),09/1/5-09/1/12 A. Futaki,Titech (Japan),09/1/5-1/5 S. Kawamura,NAOJ(Japan),09/1/5-1/5 D. Kaledin,SteklovMathInst(Russia),09/1/4-1/13 A. Hanany, MIT(US),08/12/18-09/1/21 S. Bruenn,FloridaAtlantic(US),08/12/17-12/21 M. Takeuchi, Kyoto&KEK(Japan),08/12/17-12/20 L. Deccart,Princeton(US),08/12/14-09/1/7 B. Safnuk,CentralMichigan(US),08/12/11-12/13 M. Mulase,UCDavis(US),08/12/11-12/13 B. Eynard, CEASaclay (France),08/12/11-12/13 M. Staudacher, MaxPlanck(Germany),08/12/9 -12/10 R. Ellis,Caltech(US),08/12/8-12/14 J. Peacock,Edinburgh (UK),08/12/8-12/12 D. Nagai,Yale (US),08/12/1-12/1 E. Sorokina, ITEP(Russia),08/11/30-12/30 R. Nakajima,LBNL(US),08/11/25-11/28 H.C. Wang, Taiwan (Taiwan), 08/11/19-11/19 P. Chen,SLAC(US),08/11/19-11/19 T. Yoshida, NAOJ(Japan),08/11/17-11/21 N. Yasuda, ICRRTokyo (Japan),08/11/17-11/21 H. Umeda,Tokyo (Japan),08/11/17-11/21 H. Tsunemi, Osaka(Japan), 08/11/17-11/21 M. Tanaka, Tokyo (Japan),08/11/17-11/21 Y. Suwa,Tokyo (Japan),08/11/17-11/21 T. Sekiguchi,ICRRTokyo (Japan),08/11/17-11/21 I. Sakon,Tokyo (Japan),08/11/17-11/21 G. Pignata,Chille(Chille),08/11/17-11/21 P. Nugent,LBNL(US),08/11/17-11/21 T. Moriya,Tokyo (Japan),08/11/17-11/21 A. Mizuta,Chiba(Japan),08/11/17-08/11/21 M. Kutsuna,RESCEUTokyo (Japan),08/11/17-11/21 K. Konichi,ICRRTokyo (Japan),08/11/17-11/21 Y. Kamiya,Tokyo (Japan),08/11/17-11/21 T. Kajino,NAOJ(Japan),08/11/17-11/21 N. Izutani,Tokyo (Japan),08/11/17-11/21 N. Iwamoto,JAEA(Japan),08/11/17-11/21 Y. Ihara,Tokyo (Japan),08/11/17-11/21 J. Hidaka,UCSD(US),08/11/17-08/11/21 M. Hamuy, Chille(Chille),08/11/17-11/21 C. Gerardy, FloridaState(US),08/11/17-11/21 G. Fuller, UCSD(US),08/11/17-11/21 C. Fryer, LosAlamos(US),08/11/17- 11/21 R. Peccei,UCLA(US),08/11/17-11/18 L.F. Wang, Texas A&M(US),08/11/16-11/18 D.R. Morrison,UCSB(US),08/11/16-11/18 M. Limongi,INAF(Italy),08/11/16-11/18 K. Koyama,Portsmouth(UK),08/11/10-11/10 S. Ho,Princeton(US),08/11/7-11/16 C.L. Shan,Seoul(Korea), 08/11/6-11/6 E. Kearns,Boston(US),08/11/6-11/11 T. Takeuchi, Virginia Tech (US),08/11/3-11/28 L. Hall,UCBerkeley(US),08/11/3-11/12 S. Blinnikov, ITEP(Russia),08/11/1-09/4/30 A. Moro-Martin, Princeton(US),09/1/23-1/23 R. Ookawa,Titech (Japan),09/1/22-1/22 R. Brandenberger, McGill(Canada),09/1/21-1/24 R. Lupton,Princeton(US),09/1/21-1/22 M. Strauss,Princeton(US),09/1/21-1/21 M. Mriek,Princeton(US),09/1/21-1/21 C. Loomis,Princeton(US),09/1/21-1/21 H. Yu, (US),09/1/15 -1/27 UCIrvine J. Zaanen,Leiden(Netherland),09/1/15-1/15 U. Maio,MaxPlanck(Germany),09/1/15-1/15 M. Ooguri,Stanford (US),09/1/12-1/25 E. Turner, Princeton(US),09/1/11-1/30 Y. Nakayama,UCBerkeley(US),09/1/8-1/8 G. Grantcharov, FloridaInt’l(US),09/1/7-1/12 T. Mabuchi,Osaka(Japan),09/1/6-1/8 N. Yotsutani, Nagoya(Japan),09/1/5-1/8 C. Albertsson,YITPKyoto(Japan),09/1/5-1/8 M. Rocek,StonyBrook (US),09/1/5-1/8 R. Brandenberger, McGill(Canada),09/2/9-2/9 D. Sternheimer, Keio(Japan),09/2/5-2/5 T. Nishioka,Kyoto(Japan),09/1/29-1/29 A. Ferrara,ScuolaNormaleSuperiore Pisa(Italy),09/1/27-1/27 A.R. Raklev, Cambridge(UK),09/3/16 -3/20 G. Polesello,INFN(Italy),09/3/16 -3/20 T. Plehn,Heidelberg (Germany),09/3/16-3/20 M. Peskin,SLAC(US),09/3/16-3/20 M. Park,Florida(US),09/3/16-3/20 K. Mawatari,Heidelberg (Germany),09/3/16-3/20 K. Kong,Fermilab(US),09/3/16 -3/20 N. Kersting,Sichuan(China),09/3/16-3/20 M. Herquet, NIKHEF (Netherland),09/3/16-3/20 K. Hasegawa,DESY(Germany),09/3/16-3/20 T. Han,Wisconsin-Madison(US),09/3/16-3/20 B. Gripaios,CERN(Swittzerland),09/3/16-3/20 R.M. Godbole,IndianInstScience(India),09/3/16-3/20 C. Duhl,Louvain(Belguim),09/3/16-3/20 C. Csaki,Cornell(US),09/3/16-3/20 K. Choi,KAIST(Korea), 09/3/16-3/20 W. Cho,KAIST(Korea), 09/3/16- 3/20 A. Barr, Oxford (UK),09/3/16-3/20 B. Allanach,Cambridge(UK),09/3/16-3/20 K. Hirotani, Tsing Hua(Taiwan), 09/3/16-3/16 J. Alwall,SLAC(US),09/3/15-3/22 M. Lisanti,Stanford (US),09/3/15-3/22 L. Wang, Princeton(US),09/3/15-3/21 M. Bersten,Chille(Chille),09/3/13-09/4/30 A. Karch, Washington (US),09/3/12 - 3/12 C.P. Yuan, Michigan(US),09/3/2-3/13 S.P. Oh,UCSB(US),09/3/2-3/12 S. Katsanevas,Paris(France),09/3/2-3/2 I. Nisoli,Pisa(Italy),09/2/28-5/25 S. Glover, Heidelberg (Germany),09/2/28-3/15 G. Ghazal,PerimeterInst(Canada),09/2/24-3/1 N. Afshordi, PerimeterInst(Canada),09/2/24-3/1 S. Zaroubi, KapteynAstrInst(Netherland),09/2/24-2/24 A.G. DeBruyn,ASTRON(Netherland),09/2/24-2/24 F.D. Steffen,MaxPlanck(Germany),09/2/19-2/19 S. Ma,Tokyo (Japan),09/2/19-2/19 B.K. Fujikawa,LBNL(US),09/2/15-3/2 Y. Wang, IHEP(China),09/2/12-2/12 M. Ibe,SLAC(US),09/2/12-2/12 H. Maeda,Centro deEstudiosCientificos(Chille),09/2/9-2/9 K. Igi,Riken(Japan),09/3/16-3/20 S. Ferrag,Glasgow(UK),09/3/16-3/20 J.S. Lee,Nat’lCenterforTheorSci(Taiwan), 09/3/16-3/20 B. Francesca,CERN(Switzerland),09/3/16-3/20 B. Webber, Cambridge(UK),09/3/16-3/20 H.C. Tsai, Taiwan (Taiwan), 09/3/16-3/20 T. Tait, Argonne &Northwestern(US),09/3/16-3/20 A. DeRoeck,Antwerpen(Belguim),09/3/16-3/20 F. Urban,UBC(Canada),09/3/31-09/4/2 W. Song,InstTheoPhys(China),09/3/30-09/4/3 H. Tye, Cornell(US),09/3/27-09/4/2 R. Gregory, Durham(UK),09/3/27-09/4/10 N. Turok, PerimeterInst(Canada),09/3/26-3/26 H. Nakaoka,Tokyo (Japan),09/3/19-3/19 H. Yokoya, Niigata(Japan),09/3/16-3/20 K. Sakurai,Nagoya(Japan),09/3/16-3/20

IPMU ANNUAL REPORT 2008 57 Visitors IPMU ANNUAL REPORT 2008 58 Visitors 11. JCAP 06,024(2008) Saito,Jun’ichiYokoyama,Ryo Nagata, Ryo primordial blackholeformation, superhorizon fluctuations,andnon-Gaussianityin Single-field inflation,anomalousenhancementof JCAP 06,020(2008) Yokoyama, Kazunori Nakayama,ShunSaito,Yudai Suwa,Jun’ichi with gravitationalwavebackground, Probing reheating temperature oftheuniverse Astrophys J.684,1343 (2008) Marco Limongi,Takashi Onaka, Ken’ichi Nomoto,KeiichiMaeda,HideyukiUmeda, Itsuki Sakon,MasaomiTanaka, Tomoharu Suzuki, Takaya Nozawa,Takashi Kozasa,NozomuTominaga, SN 2006jcandTemperature andMassoftheDust, Early FormationofDustintheEjectaType Ib Phys. Rev. D78,043527(2008) Nemanja Kaloper, Lorenzo Sorbo,Jun’ichiYokoyama, Inflation attheGUTscaleinaHiggslessuniverse, Phys. Rev. D78,043502(2008) Kohei Kamada,Jun’ichiYokoyama, directions, Affleck Dineleptogenesisviamultipleflat Phys. Lett.B663,281(2008) Yu Nakayama,M.Yamazaki, T. T. Yanagida, Moduli stabilizationinstringyISSmodels, Phys. Rev. D77,103009(2008) Tavakol, Jun’ichiYokoyama, Shinji Tsujikawa, KotubUddin, Shuntaro Mizuno,Reza from andlocalgravitytests, observational Constraints onscalar-tensor modelsofdarkenergy JFY2008 Phys. Rev. C77,035806(2008) Kenji Yasuoka, Toshikazu Ebisuzaki, Hidetaka Sonoda,Gentaro Watanabe, KatsuhikoSato, uncertainties insupernovacores, Phase diagramofnuclear“pasta”andits Science 319,1220(2008) Ohyama, Toshiyuki Sasaki,Tadafumi Takata, V. Filippenko,Kentaro Aoki,George Kosugi,Youichi Taubenberger, MasanoriIye,ThomasMatheson,Alexei Takashi Hattori,JinsongDeng,ElenaPian,Stefan Masaomi Tanaka, StefanoValenti, Ken’ichiNomoto, Keiichi Maeda,KojiKawabata,PaoloA.Mazzali, Time Spectroscopy, Asphericity inSupernovaExplosionsfrom Late- JFY2007

Publications Science 321,1185(2008) Carrie Trundle, Massimo Turatto, Tanaka, StefanTaubenberger, NozomuTominaga, Sari, StephenSmartt,Gianpiero Tagliaferri, Masaomi Pastorello, NinoPanagia, Leonardo J.Pellizza,Re’em Navasardyan, Ken’ichi Nomoto,ElianaPalazzi,Andrea Marziani, NicolaMasetti,FelixMirabel,Hripsime Hunter, KateMaguire, ElisabettaMaiorano,Paola Fiore, DinoFugazza, RobertoGilmozzi,Deborah Cappellaro, Stefano Covino,PaoloD’Avanzo, Fabrizio Antonelli, FilomenaBufano,Sergio Campana,Enrico Rosa, RaffaellaMargutti, FrancescoPasotti,L.Angelo Elena Pian,Tsvi Piran,Valerio D’Elia,NancyElias- Guido Chincarini,DanielN.Sauer, StefanoBenetti, Paolo A.Mazzali,StefanoValenti, MassimoDellaValle, GRBs/Hypernovae, XRF080109: alinkbetweenSupernovaeand The metamorphosisofSupernovaSN2008D/ Phys. Rev. D78,123002(2008) Nagata,Jun’ichiYokoyama,Ryo decorrelation analysis, the cosmicinversionmethodwithband-power spectrum from thefive-yearWMAPdataby Reconstruction oftheprimordial fluctuation JCAP 10,017(2008) Takahash, Shinta Kasuya,Masahiro KawasakiandFuminobu mechanism andconstraintsoninflation, Isocurvature fluctuationsinAffleck-Dine Accepted forpublicationinAstrophys. J. Nomoto, AlexV. Filippenko, Tanaka, PaoloA.Mazzali,Takashi Hattori,Ken’ichi Keiichi Maeda,KojiKawabata,Weidong Li,Masaomi Type IaSupernova2006gzatLatePhases, ofthePeculiar Subaru andKeckObservations JCAP 09,007(2008) Teruaki SuyamaandFuminobuTakahashi, Non-Gaussianity from Symmetry, Nucl. Phys.B806,224(2008) Watari, andMasahitoYamazaki, Hirotaka Hayashi,RaduTatar, Yukinobu Toda, Taizan New AspectsofHeterotic-F Duality, Theory Astrophys. J.687,1208(2008) Gurugubelli, T.P. Prabhu,andJ.Deng, K. S.Kawabata,G.C.Anupama,D.K.Sahu,U.K. Tanabe, H.Kaneda,T. Onaka,T. Nozawa,T. Kozasa, Minezaki, Y. Yoshii, I.Sakon,T. Wada, Y. Ohyama,T. K. Nomoto,Maeda,A.Chieffi, Tornambe, T. N. Tominaga, M.Limongi,T. Suzuki,M.Tanaka, Wolf-Rayet StarExplosion, The PeculiarType IbSupernova2006jc:AWCO

IPMU ANNUAL REPORT 2008 59 Publications IPMU ANNUAL REPORT 2008 60 Publications JHEP 05,089(2008) Takayanagi, Tomoyoshi Hirata, ShinjiMukohyamaandTadashi Decaying D-branesandMoving Mirrors, Phys. Rev. D77, 113017(2008) Klemm, andHitoshiMurayama, Matthew R.Buckley, BeateHeinemann,William LEP-II andTevatron, Quantum Interference EffectsAmongHelicitiesat Phys. Lett.B665,237(2008) Yanagida, Junji Hisano,MinoruNagai,ShoheiSugiyama,andT. T. Mediation ModelwithLightGravitino, Upperbound onSquarkMassesinGauge- Phys. Rev. D77,123524(2008) Masahiro Kawasaki, KazunoriNakayama, Universe, Axion ModelsinInflationary Solving CosmologicalProblems ofSupersymmetric Accepted forpublicationinNucl.Phys.B and JaewonPark, Hirosi Ooguri,Yutaka Ookouchi,Chang-SoonPark, Current Correlators forGeneralGauge Mediation, Astrophys. J.Lett.683,L127(2008) Izumi Hachisu,MarikoKato,andKen’ichiNomoto, and theSingleDegenerateModel, The DelayTime DistributionofType IaSupernovae Astrophys. J.680,580(2008) Gurugubelli, andKen’ichiNomoto, D.K. Sahu,MasaomiTanaka, G.C.Anupama,UdayK. Adding tothediversityoftypeIcsupernovae, The broad linetypeIcsupernovaSN2007ru: Astrophys. J.689,1191(2008) Takashi Hattori,andKen’ichiNomoto, Masaomi Tanaka, KojiS.Kawabata,KeiichiMaeda, Ic SN2007gr, Optical Spectropolarimetry andAsphericityofType Astrophys. J.Lett.685,L117(2008) Turatto, S.D.Van Dyk,andL.Zampieri, Nomoto, E.O.Ofek,J.Simon,T. Small,G.P. Smith,M. Li, D.Maoz,T. Matheson,P.A. Mazzali,M.Modjaz,K. R.J. Foley, D.B.Fox,R.P. Kirshner, D.C.Leonard, W. E. Cappellaro, P.J. Challis,R.S.Ellis,A.V. Filippenko, A. Gal-Yam, F. Bufano,T. Barlow, E.Baron, S.Benetti, spectral uniformityamongtypeII-Psupernovae, GALEX Spectroscopy ofSN2005aysuggestsaUV Accepted forpublicationinAstrophys. J. Della Valle, P.A. Mazzali,E.Pian, Yoshida, G.C.Anupama,S.Benetti,G.Chincarini,M. Nomoto, S.Valenti, D.K.Sahu,T. Minezaki,Y. Yoshii, M. Masaomi Tanaka, NozomuTominaga, Ken’ichi a MassiveHeliumStar, X-ray Transient 080109:AnEnergetic Explosionof Supernova 2008DassociatedwiththeLuminous Astrophys. J.672,1043(2008) Nomoto, Takashi Yoshida, HideyukiUmeda,andKen’ichi Collapse Supernovae, nu-Process NucleosynthesisinPopulationIIICore- Astrophys. J.679,1390(2008) Izumi Hachisu,MarikoKato,andKen’ichiNomoto, Supernovae andTheirCircumstellar Matter, Young Progenitors andMassive Binary ofType Ia Astrophys. J.680, 580 (2008) Nomoto, andPaoloA.Mazzali, Kawabata, KeiichiMaeda,NozomuTominaga, Ken’ichi D.K. Sahu,MasaomiTanaka, G.C.Anupama,KojiS. SN 2005hkover400days, The evolutionofthepeculiarType Iasupernova Astrophys. J.690, 526 (2009) Nozomu Tominaga, Nucleosynthesis inJet-inducedSupernovae, Aspherical Properties ofHydrodynamics and Phys. Lett.B663,86(2008) K. Hamaguchi,S.Shirai,andT.T. Yanagida, LHC, Determining themassofaultra-lightgravitinoat Phys. Rev. D77,124028(2008) Keitaro Takahashi, KiyotomoIchiki,NaoshiSugiyama, Electromagnetic Properties ofthe Early Universe, Astrophys. J.677,448(2008) Hachinger, Giuliano Pignata,Vallery Stanishev, Stephan Ken’ichi Nomoto,NancyElias-Rosa,RubinaKotak, Masaomi Tanaka, PaoloA.Mazzali,StefanoBenetti, The OutermostEjectaofType IaSupernovae, Astrophys. J.679,732(2008) Nomoto, Nozomu Tominaga, HideyukiUmeda,andKen’ichi Israelian, AlexeiV. Chornock, Filippenko,Ryan Jonay I.GonzalezHernandez,RafaelRebolo,Garik XTEJ1118+480, Black HoleX-rayBinary Starinthe Chemical AbundancesoftheSecondary JHEP 06,035(2008) Kiyotomo Kawagoe, Mihoko M.Nojiri,Yasuhiro Shimizu,ShogoOkada, gluino massdetermination, Inclusive transversemassanalysisforsquarkand Phys. Lett.B664,185(2008) Shoji Asai,Takeo Moroi, T.T. Yanagida, Test ofAnomalyMediationattheLHC, Phys. Lett.B664,194(2008) Yonekura, Fuminobu Takahashi, T.T. Yanagida, andKazuya Mass, Gravitational Waves asaProbe oftheGravitino Accepted forpublicationinMNRAS Keiichi MaedaandKoichiIwamoto, Asphericity ofOver-Luminous Type IaSupernovae, Characteristics andPossible Observational Prog. Theo.Phys.120,1093(2008) Sugimoto, Koji Hashimoto,Tadakatsu Sasaki,andShigeki Factors from Gauge/String Duality, StaticPropertiesHolographic Baryons: andForm Accepted forpublicationinArch. Math.(Basel) Shin-ichi OhtaandMikaelPichot, A noteonMarkovtypeconstants, Accepted forpublicationinAstrophys. J. Nakagawa, andH.Murakami, Minezaki, Y. Yoshii, S.Ohyabu,F. Usui,H.Matsuhara,T. Suzuki, H.Umeda,K.Nomoto,T. Nozawa,T. Kozasa,T. H. Kaneda,T. Onaka,N.Tominaga, M.Tanaka, T. I. Sakon,T. Wada, Y. Ohyama,D.Ishihara, T. Tanabe, AKARI, based onnear-to-mid infrared with observation Properties ofnewlyformeddustbySN2006jc Prog. Theor. Phys.120,1207(2008) Masahiro Nagata,Jun’ichiYokoyama, Nakashima,Ryo structure constantbythe5-yearWMAPdata, Constraints onthetimevariationoffine Phys. Rev. D78,075003(2008) Kazuya Yonekura, Satoshi Shirai,FuminobuTakahashi, T. T. Yanagida and Breaking, Gauge MediationwithSequestered Supersymmetry Accepted forpublicationinPubl.Astron. Soc.Japan Iye, Ken’ichiNomoto,andNobuyukiKawai, Ohta, KojiS.Kawabata,NaotoKobayashi,Masanori Kentaro Aoki,Tomonori Totani, Takashi Hattori,Kouji Implications fortheMgIIIncidenceProblem, Absorption Linestoward GRB060206: No EvidenceforVariability ofIntervening Phys. Rev. D78,014028(2008) Klemm,Vikram Rentala, Matthew R.Buckley, HitoshiMurayama,William Discriminating spinthrough quantuminterference, Nucl. Phys.B798,17(2008) Chang-Soon Park, Joseph Marsano,Hirosi Ooguri,Yutaka Ookouchi, Normal Coordinates, Theories, Part2:Fayet-IliopoulosTerms andKahler Metastable Vacua inPerturbedSeiberg-Witten JHEP 05,014(2008) Mihoko M.Nojiri,GiacomoPolesello,DanielR.Tovey, decays, masses attheLHCwithfullyidentifiedcascade A hybridmethodfordeterminingSUSYparticle Mathematics Accepted forpublicationintheAsian Journalof Shushi Harashita, of abelianvarieties, Configuration ofthecentralstreams inthemoduli MNRAS 392,894(2009) Prabhu, N.Tominaga, M.Tanaka, K.Nomoto, G. C.Anupama,D.K.Sahu,U.Gurugubelli,T. P. formation, Ibn supernovaSN2006jcuntiltheonsetofdust andspectroscopyOptical photometry ofthetype JHEP 0812,065(2008) Tadashi Takayanagi, Mitsutoshi Fujita,Yasuaki and Hikida,ShinseiRyu CFT, Disordered SystemsandReplicaMethodinAdS/ Phys. Rev. Lett.102,031601(2009) Nakamura, Kin-yaOda, Shunichiro Kinoshita,ShinjiMukohyama,Shin Temperature System, DualforaTime-DependentField-Theory Finite Consistent Anti-deSitter-Space/Conformal- Accepted forpublicationinAstrophys. J. Katsuhiko Sato, Yudai Suwa,Tomoya Takiwaki, KeiKotake,and Neutrino Background from Population IIIStars, Impact ofRotationonNeutrinoEmissionandRelic Accepted forpublicationinMNRAS Shin’ichiro AndoandKatsuhikoSato, Shunsaku Horiuchi,Yudai Suwa,HajimeTakami, magnetar, Nonthermal neutrinosfrom supernovaeleavinga Accepted forpublicationinAstroparticle Physics Hajime Takami andKatsuhikoSato, Cosmic Raysfrom theirArrivalDistribution, Implications toSources ofUltra-high-energy Nature 456,617(2008) Ken’ichi Nomoto, Takashi Hattori,MiwaGoto,StephanBirkmann, Oliver Krause,MasaomiTanaka, Tomonori Usuda, Ia explosionrevealed from itslightechospectrum, Tycho Brahe’s 1572Supernovaasastandard type Appliations Accepted forpublicationinTopology andits Toshitake Kohno, invariants forbraids, Bar complex,configurationspacesandfinitetype Proc. JapanAcad.84,Ser. A(2008) Kyoji Saito, of finitetype, Growth functionsassociatedwithArtinmonoids

IPMU ANNUAL REPORT 2008 61 Publications IPMU ANNUAL REPORT 2008 62 Publications Phys. Rev. D79,054002(2009) Kai Wang, Chuan-ren Chen,William L.Klemm,Vikram Rentala, Collider, Color SextetScalarsattheCERNLarge Hadron Phys. Lett.B673,255(2009) Yanagida, Chuan-Ren Chen,FuminobuTakahashi andT. T. Gauge-Boson DarkMatter, High-energy Cosmic-RayPositrons from Hidden- Accepted forpublicationinProg. Theor. Phys. Kiyotomo Ichiki,Masahiro Takada, Tomo Takahashi, Lensing, Constraints onNeutrinoMassesfrom Weak Mathematical Physics Accepted forpublicationinCommunications Hirosi OoguriandMasahitoYamazaki, MeltingandToricCrystal Calabi-Yau Manifolds, Phys. Rev. D79,043002(2009) Cosimo BambiandKatherineFreese, Apparent shapeofsuper-spinning blackholes, Phys. Rev. D79,014034(2009) Zongguo SiandKaiWang, GeV MajoranaNeutrinosinTop DecayattheLHC, Applied Algebra Accepted forpublicationinJournalofPure and Shushi Harashita, groups, Successive extensionsofminimalp-divisible Phys. Rev. D79,025010(2009) Lawrence J.Hall,MichaelP. SalemandTaizan Watari, landscapes, Neutrino mixingandmasshierarchy inGaussian Accepted forpublicationinMNRAS Keiichi MaedaandNozomuTominaga, of Gamma-RayBursts, Explosions andConstraintsontheCentralEngine Nucleosynthesis of56Niinwind-drivenSupernova MNRAS 389,1675(2008) Takahashi,Ryuichi NaokiYoshida, etal. Growth ofLarge-Scale DensityFluctuations, AccousticOsccilationsI: Simulations ofBaryon Phys. Lett.B670,434(2009) Kazunori Nakayama,FuminobuTakahashi, Effects, Cosmological ModuliProblem from Thermal JCAP 02,004(2009) Chuan-Ren Chen,FuminobuTakahashi, Cosmic raysfrom LeptonicDarkMatter, JCAP 01,026(2009) Takahashi, Masahiro Kawasaki,KazunoriNakayama,Fuminobu Hilltop Non-Gaussianity, JCAP 01,042(2009) Sekiguchi, Teruaki Suyama,FuminobuTakahashi, Masahiro Kawasaki,KazunoriNakayama,Toyokazu Isocurvature Perturbations, A GeneralAnalysisofNon-Gaussianityfrom JCAP 01,002(2009) Takahashi, Masahiro Kawasaki,KazunoriNakayama,Fuminobu Non-Gaussianity from Asymmetry, Baryon Phys. Lett.B671,71(2009) Chuan-Ren Chen,FuminobuTakahashi, T. T. Yanagida, hidden gaugeboson, Gamma raysandpositrons from a decaying JCAP 11,019(2008) Sekiguchi, Teruaki Suyama,FuminobuTakahashi, Masahiro Kawasaki,KazunoriNakayama,Toyokazu Non-Gaussianity from isocurvature perturbations, Phys. Rev. D79,055024(2009) Musolf, KaiWang, Pavel FileviezPerez, Hiren Patel,MichaelRamsey- Triplet ScalarsandDarkMatterattheLHC, Phys. Rev. D79,083501(2009) Takeshi KobayashiandShinjiMukohyama, WMAP5, Conformal Inflation,ModulatedReheatingand Accepted forpublicationinMNRAS Masahiro Takada, BhuvneshJain, lensing Surveys, The ImpactofNon-GaussianErrors onWeak 2. 12 arXiv:0710.0251[astro-ph] Nomoto, Takashi Yoshida, HideyukiUmeda,andKen’ichi Collapse Supernovae, nu-Process NucleosynthesisinPopulationIIICore- IPMU 07-0009 arXiv:0712.2718[hep-ph], JHEP05,014(2008) Mihoko M.Nojiri,GiacomoPolesello,DanielR.Tovey, decays, masses attheLHCwithfullyidentifiedcascade A hybridmethodfordeterminingSUSYparticle IPMU 07-0008 arXiv:0712.1636[hep-ph], DESY07-217:withdrawn Motoi Endo,FuminobuTakahashi, T. T. Yanagida, A Problem ofthe QCD AxioninSupergravity, IPMU 07-0007 (2008) arXiv:0712.0052[nucl-th], Phys.Rev. C77,035806 Kenji Yasuoka, Toshikazu Ebisuzaki, Hidetaka Sonoda,Gentaro Watanabe, KatsuhikoSato, uncertainties insupernovacores, Phase diagramofnuclear“pasta”andits IPMU 07-0006 arXiv:0711.2386[astro-ph] Hajime Takami andKatsuhikoSato, Magnetic Field, Distortion ofUltra-high-energy SkybyGalactic IPMU 07-0005 arXiv:0710.0767[astro-ph] Hajime Takami andKatsuhikoSato, Ultra-high-energy CosmicRaySources, Towards UnravellingtheStructuralDistributionof IPMU 07-0004 (2008) arXiv:0712.3305[hep-th], Nucl.Phys.B798,17 Chang-Soon Park, Joseph Marsano,Hirosi Ooguri,Yutaka Ookouchi, Kahler NormalCoordinates, Theories, Part2:Fayet-IliopoulosTerms and Metastable Vacua inPerturbedSeiberg-Witten IPMU 07-0003 arXiv:0711.0364[hep-ph] Klemm, Vikram Rentala, Matthew R.Buckley, HitoshiMurayama,William interference, Discriminating spinthrough quantum IPMU 07-0002 (2008) arXiv:0710.0001[hep-th], Phys.Lett.B663,281 Yu Nakayama,M.Yamazaki, T. T. Yanagida, Moduli stabilizationinstringyISSmodels, IPMU 07-0001 JFY2007

Preprints arXiv:0711.1696[astro-ph] Takahashi,Ryuichi, NaoshiSugiyama, Atsushi J.Nishizawa,Eiichiro Komatsu,NaokiYoshida, Non-linearity andImplications forDarkEnergy, Correlation: AnalyticalandNumericalStudyof Cosmic Microwave Background--Weak Lensing IPMU 07-0017 (2008) arXiv:0710.4620[astro-ph], Phys.Rev. D77,124028 Keitaro Takahashi, KiyotomoIchiki, NaoshiSugiyama, Electromagnetic Properties oftheEarlyUniverse, IPMU 07-0016 arXiv:0712.2462[hep-ph], Phys.Lett.B663,86(2008) K. Hamaguchi,S.Shirai,andT.T. Yanagida, LHC, Determining themassofaultra-lightgravitinoat IPMU 07-0015 arXiv:0711.4815[astro-ph] Nozomu Tominaga, Nucleosynthesis inJet-inducedSupernovae, Aspherical Properties ofHydrodynamics and IPMU 07-0014 arXiv:0711.4801[astro-ph] Nakagawa, andH.Murakami, Minezaki, Y. Yoshii, S.Ohyabu,F. Usui,H.Matsuhara,T. Suzuki, H.Umeda,K.Nomoto,T. Nozawa,T. Kozasa,T. H. Kaneda,T. Onaka,N.Tominaga, M.Tanaka, T. I. Sakon,T. Wada, Y. Ohyama,D.Ishihara, T. Tanabe, AKARI, based onnear-to-mid infrared with observation Properties ofnewlyformeddustbySN2006jc IPMU 07-0013 arXiv:0711.4782[astro-ph] Gurugubelli, T.P. Prabhu,andJ.Deng, K. S.Kawabata,G.C.Anupama,D.K.Sahu,U.K. Tanabe, H.Kaneda,T. Onaka,T. Nozawa,T. Kozasa, Minezaki, Y. Yoshii, I.Sakon,T. Wada, Y. Ohyama,T. K. Nomoto,Maeda,A.Chieffi, Tornambe, T. N. Tominaga, M.Limongi,T. Suzuki,M.Tanaka, Explosion, The PeculiarType IbSupernova2006jc:AWCStar IPMU 07-0012 arXiv:0710.3636[astro-ph] Nomoto, andPaoloA.Mazzali, Kawabata, KeiichiMaeda,NozomuTominaga, Ken’ichi D.K. Sahu,MasaomiTanaka, G.C.Anupama,KojiS. SN 2005hkover400days, The evolutionofthepeculiarType Iasupernova IPMU 07-0011 arXiv:0710.0319[astro-ph] Izumi Hachisu,MarikoKato,andKen’ichiNomoto, Supernovae andTheirCircumstellar Matter, Young Progenitors andMassiveBinary ofType Ia IPMU 07-0010

IPMU ANNUAL REPORT 2008 63 Preprints IPMU ANNUAL REPORT 2008 64 Preprints arXiv:0712.1949v2[astro-ph] Tomoya Takiwaki, KeiKotake, KatsuhikoSato, dominated JetsinCollapsingMassive Stars, Special RelativisticSimulations ofMagnetically- IPMU 08-0007 arXiv:0802.2412[hep-ph], JHEP 06, 035(2008) Kiyotomo Kawagoe, Mihoko M.Nojiri,Yasuhiro Shimizu,ShogoOkada, gluino massdetermination, Inclusive transversemassanalysisforsquarkand IPMU 08-0006 arXiv:0801.4936[astro-ph] Nomoto, Nozomu Tominaga, HideyukiUmeda,andKen’ichi Israelian, AlexeiV. Chornock, Filippenko,Ryan Jonay I.GonzalezHernandez,RafaelRebolo,Garik XTEJ1118+480, Black HoleX-rayBinary Starinthe Chemical AbundancesoftheSecondary IPMU 08-0005 arXiv:0801.2015[astro-ph] Limongi, T. Onaka, Tanaka, T. M. Umeda, H. K.Maeda, K. Nomoto, Suzuki, T. Nozawa,T. Kozasa,N.Tominaga, I.Sakon, M. SN 2006jcandTemperature andMassoftheDust, Early FormationofDustintheEjectaType Ib IPMU 08-0004 arXiv:0801.1100[astro-ph] Ohyama, Toshiyuki Sasaki,Tadafumi Takata, V. Filippenko,Kentaro Aoki,George Kosugi,Youichi Taubenberger, MasanoriIye,ThomasMatheson,Alexei Takashi Hattori,JinsongDeng,ElenaPian,Stefan Masaomi Tanaka, StefanoValenti, Ken’ichiNomoto, Keiichi Maeda,KojiKawabata,PaoloA.Mazzali, Time Spectroscopy, inSupernovaExplosionsfromAsymmetry Late- IPMU 08-0003 arXiv:0801.0215[astro-ph] Chiaki KobayashiandKen’ichiNomoto, Galactic SupernovaRates, Evolution I:LifetimeofType IaSupernovaeand The RoleofType IaSupernovaeinChemical IPMU 08-0002 arXiv:0801.1176[hep-th] Takeyama, H. Boos,M.Jimbo,T. Miwa,F. SmirnovandY. Creation Operators, Hidden GrassmannStructure intheXXZModelII: IPMU 08-0001 arXiv:0712.2823[astro-ph] Hachinger, Giuliano Pignata,Vallery Stanishev, Stephan Ken’ichi Nomoto,NancyElias-Rosa,RubinaKotak, Masaomi Tanaka, PaoloA.Mazzali,StefanoBenetti, The OutermostEjectaofType IaSupernovae, IPMU 07-0018 arXiv:0803.4120[hep-ph] E. Molinaro andS.T. Petcov, CP-violation inleptogenesis, The interplaybetweenthe’low’and’high’energy IPMU 08-0013 arXiv:0803.1964[astro-ph] Umeda, K. Nomoto,N.Tominaga, M.Tanaka, K.Maeda,H. Probes oftheEarlyUniverse, Extremely Metal-PoorStarsasNucleosynthetic The ConnectionbetweenGamma-RayBurstsand IPMU 08-0012 (2008) arXiv:0802.4335[hep-ph], Phys.Lett.B664,194 Yonekura, Fuminobu Takahashi, T.T. Yanagida, andKazuya Mass, Gravitational Waves asaProbe oftheGravitino IPMU 08-0011 arXiv:0802.4142[hep-ph], KEK-TH-1233,YITP-08-10 Mihoko M.NojiriandMichihisaTakeuchi, events attheLHC, Study ofthetopreconstruction intop-partner IPMU 08-0010 (2008) arXiv:0802.3725[hep-ph], Phys.Lett.B664,185 Shoji Asai,Takeo Moroi, T.T. Yanagida, Test ofAnomalyMediationattheLHC, IPMU 08-0009 arXiv:0802.2753[hep-th] M. Ibe,Y. Nakayama,andT.T. Yanagida, Dynamical Tuning oftheCosmologicalConstant, BreakingConformal Supersymmetry and IPMU 08-0008 arXiv:0804.1176[hep-th], JHEP05, 089(2008) Takayanagi, Tomoyoshi Hirata,ShinjiMukohyamaandTadashi Decaying D-branesandMovingMirrors, IPMU 08-0016 arXiv:0804.0425[astro-ph], JCAP09,007(2008) Teruaki SuyamaandFuminobuTakahashi, Non-Gaussianity from Symmetry, IPMU 08-0015 F. R.Cohen,T. KohnoandM.A.Xicontencatl subgroups ofPSL(2, R), Orbit configurationspacesassociatedtodiscrete IPMU 08-0014 JFY2008 arXiv:0804.3745[hep-ph] Yotsuyanagi, Masahiro Kawasaki,KazunoriKohri,Takeo Moroi, Akira Big-Bang Nucleosynthesisand Gravitino, IPMU 08-0026 (2008) arXiv:0802.2487[hep-ph], Phys.Rev. D77,123524 Masahiro Kawasaki, KazunoriNakayama, Universe, Axion ModelsinInflationary Solving CosmologicalProblems ofSupersymmetric IPMU 08-0025 arXiv:0805.1057[hep-th] Watari, andMasahito Yamazaki, Hirotaka Hayashi, Radu Tatar, Yukinobu Toda, Taizan New AspectsofHeterotic-F Duality, Theory IPMU 08-0024 arXiv:0804.3296[hep-ph] K. Hamaguchi,E.Nakamura,S.Shirai,T.T. Yanagida, Strongly InteractingGaugeMediationattheLHC, IPMU 08-0023 (2009) arXiv:0804.2478[hep-ph], Prog. Theor. Phys.121,711 Fuminobu Takahashi, A PossibleSolutiontotheStrong CPProblem, IPMU 08-0022 (2008) arXiv:0804.2957[hep-ph], Phys.Lett.B665,237 Yanagida, Junji Hisano,MinoruNagai,ShoheiSugiyama,andT. T. Mediation ModelwithLightGravitino, Upperbound onSquarkMassesinGauge- IPMU 08-0021 arXiv:0804.1120[hep-th] Paul L.H.Cook,Hirosi Ooguri,andJieYang, New AnomaliesinTopological StringTheory, IPMU 08-0020 arXiv:0804.0636[hep-ph] M. Ibe,Y. NakayamaandT.T. Yanagida, of MassM3/2O(10)eV, Conformal GaugeMediationandLightGravitino IPMU 08-0019 Hitoshi Murayama Looking upatseesawandGUTscalesfrom TeV, IPMU 08-0018 (2008) arXiv:0804.0476[hep-ph], Phys.Rev. D77,113017 Klemm, andHitoshiMurayama, Matthew R.Buckley, BeateHeinemann,William LEP-II andTevatron, Quantum Interference EffectsAmongHelicitiesat IPMU 08-0017 ! arXiv:0806.2422[astro-ph] Yokoyama, Sugumi Kanno,MasashiKimura, Jiro Soda,Shuichiro Anisotropic Inflationfrom Vector Impurity, IPMU 08-0036 arXiv:0806.0634[hep-th] Radu Tatar andTaizan Watari, Compactifications, GUT Relationsfrom StringTheory IPMU 08-0035 arXiv:0805.3969[astro-ph] Toru KanzakiandMasahiro Kawasaki, Universe, Electron andPhoton Energy Depositionin IPMU 08-0034 arXiv:0806.0001[hep-th] Tudor DanDimofte, Type IIBFluxVacua atLarge ComplexStructure, IPMU 08-0033 arXiv:0805.4245[hep-ph], JCAP10,017(2008) Takahashi, Shinta Kasuya,Masahiro KawasakiandFuminobu mechanism andconstraintsoninflationmodels, Isocurvature fluctuationsinAffleck-Dine IPMU 08-0032 arXiv:0805.4216[hep-th] Keller, Gregory W. Moore, andHirosi Ooguri, Matthias R.Gaberdiel, Sergei Gukov, ChristophA. Constraints ofModularity, Extremal C=(2,2)2DConformalFieldTheoriesand IPMU 08-0031 Toshitake Kohno invariants forbraids, Bar complex,configurationspacesandfinitetype IPMU 08-0030 arXiv:0805.2502[hep-ph] Koichi Hamaguchi,EitaNakamura,SatoshiShirai, Light GravitinoScenarios, A Measurement ofNeutralinoMassattheLHCin IPMU 08-0029 arXiv:0805.3327[hep-ph] Junji HisanoandYasuhiro Shimizu, with right-handedneutrinos, CP violationinBsmixingtheSUSYSU(5)GUT IPMU 08-0028 arXiv:0806.3122[hep-th] Sugimoto, Koji Hashimoto,Tadakatsu Sasaki,andShigeki Factors from Gauge/StringDuality, StaticPropertiesHolographic Baryons: andForm IPMU 08-0027

IPMU ANNUAL REPORT 2008 65 Preprints IPMU ANNUAL REPORT 2008 66 Preprints arXiv:0806.1590[astro-ph] Ken’ichi Nomoto, Masaomi Tanaka, KeiichiMaeda,PaoloA.Mazzali,and Transfer inAsphericalCore-Collapse Supernovae, Multi-Dimensional SimulationsofRadiative IPMU 08-0046 Astrophys. J.inpress, arXiv:0806.1589[astro-ph] Takashi Hattori,andKen’ichiNomoto, Masaomi Tanaka, KojiS.Kawabata,KeiichiMaeda, Ic SN2007gr, Optical Spectropolarimetry andAsphericityofType IPMU 08-0045 Gurugubelli, andKen’ichiNomoto D.K. Sahu,MasaomiTanaka, G.C.Anupama,UdayK. Adding tothediversityoftypeIcsupernovae, The broad linetypeIcsupernovaSN2007ru: IPMU08-0044 Izumi Hachisu,MarikoKato,andKen’ichiNomoto and theSingleDegenerateModel, The DelayTime DistributionofType IaSupernovae IPMU 08-0043 Matt Buckley, S.Y. Choi,K.Mawatari,H.Murayama Angle Correlations, Determining Spinthrough QuantumAzimuthal- IPMU 08-0042 Ryuichiro Kitano,HitoshiMurayama,MichaelRatz anddarkmatter,Unified originofbaryon IPMU 08-0041 Yanagida S. Asai,O.Jinnouchi,T. Moroi, S.ShiraiandT.T. LHC, Mass Measurement oftheDecayingBinoat IPMU 08-0040 Nakamura, Kin-yaOda Shunichiro Kinoshita,ShinjiMukohyama,Shin A HolographicDualofBjorkenFlow, IPMU 08-0039 arXiv:0806.4733[hep-th] and JaewonPark, Hirosi Ooguri,Yutaka Ookouchi,Chang-SoonPark, Current Correlators forGeneralGaugeMediation, IPMU 08-0038 Kyoji Saito Growth seriesforArtinmonoidsoffinitetype, IPMU 08-0037 m arXiv:0808.0500[hep-th] Hirosi OoguriandChang-SoonPark, Squashed S7, Superconformal Chern-SimonsTheoriesand IPMU 08-0052 arXiv:0808.1094[hep-ph] Michihisa Takeuchi, Mihoko M.Nojiri,KazukiSakurai,Yasuhiro Shimizu, Handling jets+missing IPMU 08-0051 arXiv:0808.0009[astro-ph], JCAP11,019(2008) Sekiguchi, Teruaki Suyama,FuminobuTakahashi, Masahiro Kawasaki, KazunoriNakayama,Toyokazu Non-Gaussianity from isocurvature perturbations, IPMU 08-0050 Science 321,1185(2008),arXiv:0807.1695[astro-ph] Carrie Trundle, MassimoTuratto, Tanaka, StefanTaubenberger, NozomuTominaga, Sari, StephenSmartt,Gianpiero Tagliaferri, Masaomi Pastorello, NinoPanagia,Leonardo J. Pellizza,Re’em Navasardyan, Ken’ichiNomoto,ElianaPalazzi,Andrea Marziani, NicolaMasetti,FelixMirabel,Hripsime Hunter, KateMaguire, ElisabettaMaiorano,Paola Fiore, DinoFugazza,RobertoGilmozzi,Deborah Cappellaro, StefanoCovino,PaoloD’Avanzo, Fabrizio Antonelli, FilomenaBufano,Sergio Campana,Enrico Rosa, RaffaellaMargutti, FrancescoPasotti,L.Angelo Elena Pian,Tsvi Piran,Valerio D’Elia,NancyElias- Guido Chincarini,DanielN.Sauer, StefanoBenetti, Paolo A.Mazzali,StefanoValenti, MassimoDellaValle, / Hypernovae, XRF080109: alinkbetweenSupernovaeandGRBs The metamorphosisofSupernovaSN2008D/ IPMU 08-0049 Astrophys. J.inpress, arXiv:0807.1674[astro-ph] Della Valle, P.A. Mazzali,E.Pian, Yoshida, G.C.Anupama,S.Benetti,G.Chincarini,M. Nomoto, S.Valenti, D.K.Sahu,T. Minezaki,Y. Yoshii, M. Masaomi Tanaka, NozomuTominaga, Ken’ichi a MassiveHeliumStar, X-ray Transient 080109:AnEnergetic Explosionof Supernova 2008DassociatedwiththeLuminous IPMU 08-0048 arXiv:0806.3276[astro-ph] Astrophys. J.Lett.685,L117(2008), Turatto, S.D.Van Dyk,andL.Zampieri Nomoto, E.O.Ofek,J.Simon,T. Small,G.P. Smith,M. Li, D.Maoz,T. Matheson,P.A. Mazzali,M.Modjaz,K. R.J. Foley, D.B.Fox,R.P. Kirshner, D.C.Leonard, W. E. Cappellaro, P.J. Challis,R.S.Ellis,A.V. Filippenko, A. Gal-Yam, F. Bufano,T. Barlow, E.Baron, S.Benetti, spectral uniformityamongtypeII-Psupernovae, GALEX Spectroscopy ofSN2005aysuggestsaUV IPMU 08-0047 T2 , E T channelusinginclusive arXiv:0809.2242[hep-ph], JCAP 01, 002(2009) Takahashi, Masahiro Kawasaki, KazunoriNakayama,Fuminobu Non-Gaussianity from Asymmetry, Baryon IPMU 08-0061 arXiv:0810.0810[hep-th] Takeshi KobayashiandShinjiMukohyama, WMAP5, Conformal inflation,modulated reheating and IPMU 08-0060 Proc. ofSUSY08,to appear Mihoko M.Nojiri, expectations intheearlystageandbeyond---, The Nightbefore theLHC---thoughtsabout IPMU 08-0059 arXiv:0809.0792[hep-ph], Phys.Lett.B671,71(2008) Yanagida, Chuan-Ren Chen,FuminobuTakahashi andT. T. hidden gaugeboson, Gamma raysandpositrons from a decaying IPMU 08-0058 arXiv:0808.3534[hep-ph] E. Molinaro, S.T. Petcov, Contribution totheBaryon, A CaseofSubdominant/Suppressed “HighEnergy” IPMU 08-0057 arXiv:0810.0746[gr-qc] Yu-ichi Takamizu andShinjiMukohyama, canonical scalarfield, Nonlinear superhorizonperturbationsofnon- IPMU 08-0056 Nakamura, Kin-yaOda Shunichiro Kinoshita,ShinjiMukohyama,Shin CFT, RHIC asatestingground fortime-dependentAdS/ IPMU 08-0055 arXiv:0808.1720[hep-ph] Kiermaier, Henriette Elvang,DanielZ.Freedman, Michael Unitarity SumsinN=4SYMTheory, Recursion Relations,GeneratingFunctions,and IPMU 08-0054 arXiv:0808.0848[hep-ph] Phys. Rev. D78,075003(2008), Kazuya Yonekura, Satoshi Shirai,FuminobuTakahashi, T. T. Yanagida and Breaking, Gauge MediationwithSequestered Supersymmetry IPMU 08-0053 submitted toMNRAS, arXiv:0810.4170[astro-ph] Masahiro Takada, BhuvneshJain, lensing Surveys, The ImpactofNon-GaussianErrors onWeak IPMU 08-0070 arXiv:0810.0208[astro-ph], JCAP01,042(2009) Takahashi, Toyokazu Sekiguchi,Teruaki Suyama, Fuminobu IPMU08-0069 Masahiro Kawasaki,KazunoriNakayama, Isocurvature Perturbations, A GeneralAnalysisofNon-Gaussianityfrom IPMU 08-0069 arXiv:0810.5266[hep-ph] Zongguo SiandKaiWang, GeV MajoranaNeutrinosinTop DecayattheLHC, IPMU 08-0068 arXiv:0809.4242[astro-ph] Ken’ichi Nomoto,NobuyukiIwamoto, Nozomu Tominaga, HideyukiUmeda,KeiichiMaeda, Supernova NucleosynthesisintheEarlyUniverse, IPMU 08-0067 arXiv:0808.4157[astro-ph] Publ. Astron. Soc.Japaninpress, Nobuyuki Kawai, Kobayashi, MasanoriIye,Ken’ichiNomoto,and Takashi Hattori,KoujiOhta,KojiS.Kawabata,Naoto IPMU08-0066 Kentaro Aoki,Tomonori Totani, Implications fortheMgIIIncidenceProblem, Absorption Linestoward GRB060206: No EvidenceforVariability ofIntervening IPMU 08-0066 Astrophys. J.inpress, arXiv:0808.1441[astro-ph] Tominaga, H.Umeda,andK.Nomoto, A. Takigawa, J.Miki,S.Tachibana, G.R.Huss,N. Mixing-Fallback, Early SolarSystemfrom aFaintSupernovawith Injection ofShort-LivedRadionuclidesintothe IIPMU 08-0065 Astrophys. J.inpress, arXiv:0808.0138[astro-ph] Nomoto, AlexV. Filippenko, Tanaka, PaoloA.Mazzali,Takashi Hattori,Ken’ichi Keiichi Maeda,KojiKawabata,Weidong Li,Masaomi Type IaSupernova2006gzatLate-Phases, ofThePeculiar Subaru andKeckObservations IPMU 08-0064 arXiv:0809.1650[hep-ph] Masahito Yamazaki, Octonions, G_2andgeneralizedLie3-algebras, IPMU 08-0063 arXiv:0808.3768[hep-ph] Kazushi UedaandMasahitoYamazaki, matter theories, Toric Calabi-Yau four-folds dualtoChern-Simons- IPMU 08-0062

IPMU ANNUAL REPORT 2008 67 Preprints IPMU ANNUAL REPORT 2008 68 Preprints arXiv Math. Shin-ichi OhtaandMikaelPichot, A noteonMarkovtypeconstants, IPMU 08-0079 arXiv:0810.1804[math] Yukinobu Toda andTakehiko Yasuda, D-modules, Noncommutative resolutuion, F-blowupsand IPMU 08-0078 arXiv:0810.1892[hep-ph] Kazunori Nakayama, Junji Hisano,Masahiro Kawasaki,KazunoriKohri, Annihilation andBig-BangNucleosynthesis, Positron/Gamma-Ray Signatures ofDarkMatter IPMU 08-0077 arXiv:0810.2561[hep-th] Lawrence J.Hall,MichaelP. SalemandTaizan Watari, landscapes, Neutrino mixingandmasshierarchy inGaussian IPMU 08-0076 2008, http://arxiv.org/abs/0809.4369 From theFirstStarstoDwarfGalaxies”,Rapallo,June IAU Symposium255“Low-MetallicityStarFormation: Ken’ichi Nomoto, Hideyuki Umeda,NozomuTominaga, KeiichiMaeda, Takaya Nozawa,Takashi Kozasa,AsaoHabe,EliDwek, Elemental CompositionofPopulationII.5Stars, III SupernovaRemnantsandItsImpactonthe Evolution ofNewlyFormedDustinPopulation IPMU 08-0075 arXiv:0810.1737[hep-th] Michael Kiermaier, Yuji Okawa,BartonZwiebach, statefromThe boundary openstringfields, IPMU 08-0074 Astrophys. J.inpress, arXiv:0808.0138[astro-ph] Nomoto, AlexV. Filippenko, Tanaka, PaoloA.Mazzali,Takashi Hattori,Ken’ichi Keiichi Maeda,KojiKawabata,Weidong Li,Masaomi Type IaSupernova2006gzatLatePhases, ofthePeculiar Subaru andKeckObservations IPMU 08-0073 arXiv:0810.1585[hep-ph], JCAP01,026(2009) Takahashi, Masahiro Kawasaki,KazunoriNakayama,Fuminobu Hilltop Non-Gaussianity, IPMU 08-0072 arXiv:arXiv:0810.4110[hep-ph], JCAP02,004(2009) Chuan-Ren ChenandFuminobuTakahashi, Cosmic raysfrom LeptonicDarkMatter, IPMU 08-0071 arXiv:0811.0737[hep-ph] T.T.Yanagida, Koichi Hamaguchi,EitaNakamura, SatoshiShirai,and Messenger Model, inaComposite Decaying DarkMatterBaryons IPMU 08-0088 arXiv:0811.2801[hep-th] Hirosi Ooguriand Masahito Yamazaki, MeltingandToricCrystal Calabi-Yau Manifolds, IPMU 08-0087 (2009) arXiv:0811.0477[hep-ph], Phys.Lett.B673,255 Yanagida, Chuan-Ren Chen,FuminobuTakahashi andT. T. Gauge-Boson DarkMatter, High-energy Cosmic-Ray Positrons from Hidden- IPMU 08-0086 (2009) arXiv:0811.0444[hep-ph], Phys.Lett.B670,434 Kazunori NakayamaandFuminobuTakahashi, Effects, Cosmological ModuliProblem from Theremal IPMU 08-0085 arXiv:0811.2105[hep-ph] Kai Wang, Chuan-ren Chen,WilliamL.Klemm,Vikram Rentala, Collider, Color SextetScalarsattheCERNLarge Hadron IPMU 08-0084 http://arxiv.org/abs/0810.4921 Kiyotomo Ichiki,Masahiro Takada, Tomo Takahashi, Lensing, Constraints onNeutrinoMassesfrom Weak IPMU 08-0083 arXiv:arXiv:0810.5413[hep-ph] Kazuya Yonekura, Izawa K.-I.,FuminobuTakahashi, T.T. Yanagida and with DynamicalMetastability, BreakingGravity MediationofSupersymmetry IPMU 08-0082 Takashi Okada Masaki Asano,JunjiHisano,SoheiSugiyama,and Sector, Breaking ModelwithSuperconformal Hidden A RealisticExtensionofGauge-MediatedSUSY- IPMU 08-0081 arXiv:0810.5394[hep-th] Tadashi Takayanagi, Mitsutoshi Fujita,Yasuaki and Hikida,ShinseiRyu CFT, Disordered SystemsandReplicaMethodinAdS/ IPMU 08-0080 Astrophys. J.,arXiv:0807.0267[astro-ph] Katsuhiko Sato, Yudai Suwa,Tomoya Takiwaki, KeiKotake,and Neutrino Background from PopulationIIIStars, Impact ofRotationonNeutrino EmissionandRelic IPMU 08-0099 Phys. Rev. D,arXiv:0811.3635[astro-ph] Alan Cooney, SimonDeDeo,DimitriosPsaltis, Without NewDegrees ofFreedom, Gravity withPerturbativeConstraints:DarkEnergy IPMU 08-0098 M. Ibe,H.Murayama,andT.T. Yanagida Effectine BoostFactorofDarkMatterAnnihilation, IPMU 08-0097 arXiv:0812.0585[astro-ph] Katherine Freese and MartaVolonteri, Cosimo Bambi,DouglasSpolyar, AlexanderD.Dolgov, holes, stars andtheoriginofsuper-massive black Implications ofprimordial blackholesonthefirst IPMU 08-0096 arXiv:0812.1328[astro-ph] Cosimo BambiandKatherineFreese, Apparent shapeofsuper-spinning blackholes, IPMU 0800095 Phys. Rev. D,arXiv:0811.1999[astro-ph] Simon DeDeo,ChandaPrescod-Weinstein, Observatories, Energy-Dependent SpeedsofLightforCosmic-Ray IPMU 08-0093 Prog. Theor. Phys. arXiv:0811.3357[astro-ph], acceptedforpublicationin Takahashi, T. T. Yanagida, Chuan-Ren Chen,MihokoM.Nojiri,Fuminobu and ATIC/PPB-BETS Anomalies, Decaying HiddenGaugeBosonandthePAMELA IPMU 08-0092 arXiv:0811.3957[hep-ph] Musolf, KaiWang, Pavel FileviezPerez, Hiren Patel,MichaelRamsey- Triplet ScalarsandDarkMatterattheLHC, IPMU 08-0091 press., arXiv:0811.2095[astro-ph] Monthly NoticesoftheRoyalAstronomical Societyin Keiichi MaedaandKoichiIwamoto, Asphericity ofOver-Luminous Type IaSupernovae, CharacteristicsandPossible Observational IPMU 08-0090 M. Jimbo,T. Miwa,F. Smirnov Introducing Matsubaradirection, Hidden GrassmannStructure intheXXZModelIII: IPMU 08-0089

ph] Nature 456,617-619(2008),arXiv:0810.5106[astro- Ken’ichi Nomoto, Takashi Hattori,MiwaGoto,StephanBirkmann, Oliver Krause,MasaomiTanaka, Tomonori Usuda, Ia explosionrevealed from itslightechospectrum, Tycho Brahe’s 1572 Supernova asastandard type IPMU 08-0108 http://arxiv.org/abs/0812.1448 Takeuchi, Takako T. Ishii, Nozomu Tominaga, AsaoHabe,EliDwek,Tsutomu T. Hiroyuki Hirashita, KeiichiMaeda,Ken’ichiNomoto, Takaya Nozawa,Takashi Kozasa,HideyukiUmeda, 2008, “Cosmic Dust-NearandFar”,Heidelberg, September Origin andNature ofDustintheEarlyUniverse, IPMU 08-0107 Shushi Harashita Oort’s conjecture, Generic NewtonpolygonsofEkedahl-Oortstrata: IPMU 08-0106 Shushi Harashita groups, Successive extensionsofminimalp-divisible IPMU 08-0105 Shushi Harashita of abelianvarieties, Configuration ofthecentralstreams inthemoduli IPMU 08-0104 Ahunsuke Tuchioka Makoto Fuchiwaki,MichihikoFujii,KyojiSaitoand monoids offinitetype, Geodesic automataandgrowth functionsforArtin IPMU 08-0103 JCAP, arXiv:0812.0424[astro-ph] and KatsuhikoSato, Hajime Takami, Takahiro Nishimichi,Kazuhiro Yahata, Distribution andLarge-Scale Structure, Cross-Correlation betweenUHECRArrival IPMU 08-0102 JCAP, arXiv:0807.3442[astro-ph] Hajime Takami andKatsuhikoSato, Cosmic Raysfrom theirArrivalDistribution, Implications toSources ofUltra-high-energy IPMU 08-0101 MNRAS, arXiv:0807.0267[astro-ph] Shin’ichiro AndoandKatsuhikoSato, Shunsaku Horiuchi,Yudai Suwa,HajimeTakami, magnetar, Nonthermal neutrinosfrom supernovaeleavinga IPMU 08-0100

IPMU ANNUAL REPORT 2008 69 Preprints IPMU ANNUAL REPORT 2008 70 Preprints arXiv:0812.2306[math] B. Feigin,E.M.Jimbo,Mukhin,T. Miwa, difference Toda Hamiltonian, Fermionic formulasforeigenfunctionsofthe IPMU 08-0116 Koichi Hamaguchi,SatoshiShirai,andT. T. Yanagida Hidden-Fermion DarkMatterDecays, Cosmic RayPositron andElectron Excessfrom IPMU 0800115 arXiv:0812.1797[astro-ph] Kinney, Brian A.Powell,KonstantinosTzirakis,WilliamH. potential reconstruction, Tensors, non-Gaussianities,andthefuture of IPMU 08-0114 arXiv:0812.4200[astro-ph], JCAP05,015(2009) Fuminobu Takahashi, ShojiTorii, Chuan-Ren Chen,KoichiHamaguchi,MihokoNojiri, BETS anomaly, Dark MatterModelSelectionandtheATIC/PPB- IPMU 08-0113 arXiv:9812.0219[hep-ph] Kazunori Nakayama, Junji Hisano,Masahiro Kawasaki,KazunoriKohriand Cosmic RayElectron/Positron Fluxes, Matter intheLightofRecentMeasurements of Neutrino Signalsfrom Annihilating/DecayingDark IPMU 08-0112 MNRAS, arXiv:0811.0060[astro-ph] Prabhu, N.Tominaga, M.Tanaka, K.Nomoto, G. C.Anupama,D.K.Sahu,U.Gurugubelli,T. P. formation, Ibn supernovaSN2006jcuntiltheonsetofdust andspectroscopyOptical photometry ofthetype IPMU 08-0111 Astrophys. J.,arXiv:0810.3999[astro-ph] Mueller, S. Wanajo, K.Nomoto,H.-Th.Janka,F. S.Kitaura,B. of AGBStars, Nucleosynthesis inElectron Capture Supernovae IPMU 08-0110 http://arxiv.org/abs/0810.0157 Nobuyuki Iwamoto,Ken’ichiNomoto, Nozomu Tominaga, HideyukiUmeda,KeiichiMaeda, Sapporo, December2007, “ORIGIN OFMATTER ANDEVOLUTIONOFGALAXIES”, Poor Stars, Supernova NucleosynthesisandExtremely Metal- IPMU 08-0109 arXiv:0809.4537[astro-ph] Phys. Rev. D78,123002 (2008), Nagata,Jun’ichiYokoyama,Ryo decorrelation analysis, the cosmicinversionmethodwithband-power spectrum from the five-yearWMAPdataby Reconstruction oftheprimordial fluctuation IPMU08-0124 JCAP 06,024(2008),arXiv:0804.3470[astro-ph] Saito,Jun’ichiYokoyama,Ryo Nagata, Ryo primordial blackhole formation, superhorizon fluctuations,andnon-Gaussianityin Single-field inflation,anomalousenhancementof IPMU08-0123 JCAP 06,020(2008),arXiv:0804.1827[astro-ph] Yokoyama, Kazunori Nakayama,ShunSaito,Yudai Suwa,Jun’ichi with gravitationalwavebackground, Probing reheating temperature oftheuniverse IPMU08-0122 arXiv:0803.3809[hep-th] Phys. Rev. D78,043527(2008), Nemanja Kaloper, Lorenzo Sorbo,Jun’ichiYokoyama, Inflation attheGUTscaleinaHiggslessuniverse, IPMU08-0121 arXiv:0803.1106[hep-ph] Phys. Rev. D78,043502(2008), Kohei Kamada,Jun’ichiYokoyama, directions, Affleck Dineleptogenesisviamultipleflat IPMU08-0120 arXiv:0803.1106[astro-ph] Phys. Rev. D77,103009(2008), Tavakol, Jun’ichiYokoyama, Shinji Tsujikawa, KotubUddin, Shuntaro Mizuno,Reza from andlocalgravitytests, observational Constraints onscalar-tensor modelsofdarkenergy IPMU08-0119 arXiv:0901.1915[astro-ph] Eiichiro KomatsuandFuminobuTakahashi, Matter andtheATIC/PPB-BETS excess, Gravitational DecayofAHiddenScalarDark IPMU08-0118 Astrophys. J.,arXiv:0812.2710[astro-ph] Biermann, Michael Loewenstein,AlexanderKusenko,PeterL. Galaxy, oftheUrsaMinorDwarfSpheroidalObservations New LimitsonSterileNeutrinosfrom Suzaku IPMU08-0117 arXiv:0902.1798 [hep-th] Damien EassonandRuthGregory, Circumventing theetaproblem, IPMU09-0009 arXiv:0901.3582[hep-ph] Moroi andKazunori Nakayama, Junji Hisano,Masahiro Kawasak,KazunoriKohri,Takeo Big-Bang Nucleosynthesis, Cosmic Raysfrom DarkMatterAnnihilationand IPMU09-0008 arXiv:0812.4089[hep-ph] K.-I. Izawa,Y. Nakai, Breaking,Supersymmetry Strongly Coupled Semi-Direct Mediationof IPMU09-0007 arXiv:0901.3595 [hep-th] Shinji Mukohyama, Ghost condensateandgeneralizedsecondlaw, IPMU09-0006 arXiv:0901.2168[hep-ph], Phys.Lett.B677,59(2009) Yanagida, Koichi Hamaguchi,FuminobuTakahashi, Tsutomu bound onthegluinomass, Decaying gravitinodarkmatterandanupper IPMU09-0005 Hirosi Ooguri AsSeenByStringTheory,Geometry IPMU09-0004 arXiv:0901.0720[hep-ph] Seong ChanParkandJingShu, Split-UED andDarkMatter, IPMU09-0003 Takayanagi Mitsutoshi Fujita,Wei andTadashi Li,ShinseiRyu, Chern-Simons, EdgeStates,andHierarchy, Fractional QuantumHallEffectviaHolography: IPMU09-0002 MNRAS inpress, arXiv:0901.0410[astro-ph] Keiichi MaedaandNozomuTominaga, of Gamma-RayBursts, Explosions andConstraintsontheCentralEngine Nucleosynthesis of56Niinwind-drivenSupernova IPMU09-0001 arXiv:0810.1098[astro-ph] Prog. Theo.Phys.120,1207(2008), Masahiro Nagata,Jun’ichiYokoyama, Nakashima,Ryo structure constantbythe5-yearWMAPdata, Constraints onthetimevariationoffine IPMU08-0125 Shunske Tsuchioka Makoto Fuchiwaki,MichihikoFujii, KyojiSaitoand monoids offinitetype, Geodesic automataandgrowth functionsforArtin IPMU09-0019 Hiroshige Kajiura, Kyoji Saito,andAtsushiTakahashi for RegularSystemsofWeights with Triangulated CategoriesofMatrixFactorizations IPMU09-0018 Kyoji SaitoandAtsushiTakahashi From PrimitiveForms toFrobenius Manifolds, IPMU09-0017 Publ. RIMS Kyoji Saito, Discrete Group, Limit ElementsintheConfigurationAlgebrafora IPMU09-0016 http://member.ipmu.jp/kyoji.saito/towards.pdf Advanced StudiesinPure Mathematics50,101(2008), Kyoji Saito, Algebras, Towards aCategoricalConstructionofLie IPMU09-0015 arXiv:0901.4941[hep-th] Taizan Watari, Hirotaka Hayashi,Teruhiko Kawano,RaduTatar and Couplings inF-theory, Codimension-3 SingularitiesandYukawa IPMU09-0014 Toshifumi Futamase,GrahamP. Smith Nobuhiro Okabe,Masahiro Takada, KeiichiUmetsu, Clusters, Subaru Weak LensingStudyof30 LoCuSSGalaxy IPMU09-0013 arXiv:0812.4283[hep-ph] Junji Hisano,MinoruNagai,ParideParadisi, Moments inSupersymmetricTheories, A CompleteAnalysisof’Flavored’ ElectricDipole IPMU09-0012 arXiv:0812.4496[hep-ph] Sreethawong, Junji Hisano,MihokoM.Nojiri,Warintorn Studies, Ordering attheLHCandItsImpactonLFV Discriminating Electroweak-ino Parameter IPMU09-0011 Koji Hashimoto,Tadakatsu Sakai,ShigekiSugimoto Nuclear Force from StringTheory, IPMU09-0010 ε =-1,

IPMU ANNUAL REPORT 2008 71 Preprints IPMU ANNUAL REPORT 2008 72 Preprints Yukinobu Toda correspondence, countingtheoriesviastableobjectsI.DT/PT Curve PMU09-0028 arXiv:0902.4770[hep-ph], Phys.Lett.B675,73(2009) Satoshi Shirai,FuminobuTakahashi, T.T.Yanagida ATIC Anomalies, Decaying HiddenGauginoasaSource ofPAMELA/ IPMU09-0027 Shoji Asai,KoichiHamaguchi,andSatoshiShirai Particles attheLHCdetectors, Stop andDecayofLong-livedCharged Massive IPMU09-0026 Hirosi OoguriandMasahitoYamazaki Emergent Calabi-Yau Geometry, IPMU09-0025 Tsutomu Yanagida Masahiro Ibe,Yu Nakayama,HitoshiMurayama, Electron andPositron Excess, Nambu-Goldstone DarkMatterandCosmicRay IPMU09-0024 Jing Shu,MichihisaTakeuchi Chuan-Ren Chen,MihokoNojiri,SeongChanPark, UED, Dark matterandcolliderphenomenologyofsplit- IPMU09-0023 Simeon Hellerman gravity, A universalinequalityforCFTandquantum IPMU09-0022 arXiv:0902.2647[hep-th] Cosimo BambiandKatherineFreese, Frampton, of aminimumlengthinquantumgravity”byP.H. Reply to“Anoteontheinnocuousimplications IPMU09-0021 Yonekura Izawa K.-I.,FuminobuTakahashi, T.T.Yanagida, Kazuya Breaking,Runaway DynamicsandSupersymmetry IPMU09-0020 C.-P. Yuan Qing-Hong Cao,Chuan-RenChen,CarlSchmidtand and theLHC, Improved Predictions forHiggsPT attheTevatron IPMU09-0038 S.T. Petcov, H.SugiyamaandY. Takanishi Decays intheHiggsTriplet Model, Neutrinoless DoubleBetaDecayand IPMU09-0037 Yoshida Sakura Schafer-Nameki, MasahitoYamazaki, Kentaroh CFTs, Coset ConstructionforDualsofNon-relativistic IPMU09-0036 Kyoji Saito Growth functionsforArtinmonoids, IPMU09-0034 Cosimo Bambi,Masahiro Kawasaki,FedericoR.Urban Axion braneworldcosmology, IPMU09-0033 Yasuaki Hikida,Wei LiandTadashi Takayanagi withFlavorsandFQHE, ABJM Theory IPMU09-0032 Shunichiro KinoshitaandShinjiMukohyama Rubin compactification, Thermodynamic anddynamicalstabilityofFreund- IPMU09-0031 Robbert Dijkgraaf,DomenicoOrlando,SusanneReffert Quantization, Relating FieldTheoriesviaStochastic IPMU09-0030 Heidelberg, September2008 Contribution to“CosmicDust-NearandFar”, Hideyuki Umeda,KeiichiMaeda,Ken’ichiNomoto, Takashi Kozasa,Takaya Nozawa,NozomuTominaga, Dust inSupernovae;FormationandEvolution, IPMU09-0029

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13. by H.OogurionMarch 14. Causality” of Crisis the and Hole “Black 7, March on Murayama H. by Limitation” its and Theory Kobayashi-Masukawa Antimatter: Missing the of Mystery “The 28, February on Inoue K. by Neutrino” by Explored Universe “The 21, February on Sato K. by Theory” Inflation and Universe the of “Birth 14, February on Sugiyama N. by Future” and Past, Present, Universe: “The of topics the covered Universe” - Cafe “Science museum. the with Tokyo,jointly Museum, Science Miraikan, Tokyo,at duringaneventcalledScienceAgora2008November 22-24,2008. other and House Open Campus Kashiwa the at 2008 24, October on once occasions, two on Antimatter” Missing the of Mystery “The lecture public another gave Murayama Director attended. area,Tokyo of mostly time this 300, of audience An Campus. Hongo of the Hall Yayoiat 2008 24, January on topic same the on lecture public his of another organized we success, the by Encouraged answers. and questions of session hour one subsequent in participated and lecture hour one to listened enthusiastically eighties, their to agers teen from ranging and area Kashiwa from mostly 300, than more of Audience Campus. Kashiwa on Public Lectures oftheuniverseandhowwearesolving themystery makingprogressfor withothers. ideas exciting our share to like we importantly,more but payers, tax to obligation our are these only Not public. general for programoutreach on emphasis strong put Wealso activities. by aquestionandanswersession. ■ Figure 22: Hitoshi Murayama’s public lecture at Kashiwa campus on July 12, 2008. The lecture was followed was lecture The 2008. 12, July on campus Kashiwa at lecture public Murayama’s Hitoshi 22: Figure We organized a series of five public lectures in an informal cafe-style at the Rokuto the Tama at cafe-style informal an in lectures public five of series a organizedWe 2008 12, July on Universe?” the to End an There “Is lecture a gave Murayama Director research IPMU of outcome the and mission our publicizing for efforts strong make We

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IPMU ANNUAL REPORT 2008 73 Outreach and Public Communications IPMU ANNUAL REPORT 2008 74 Outreach and Public Communications also featuringinterested topics. and arrivals, new researchintroductionof seminars, hightlight, conferencesand hosted as such IPMU NEWS We published “IPMU NEWS” magazine five times, covering a wide range of news at IPMU at news of range wide a covering times, five magazine WeNEWS” “IPMU published such asschoolsandhospitals. information living as well as expenses, travel and grants research as such information work-relatedthe benefits, and tax and salary as such contract hiring procedureson Japanese understand to employees foreign help to placed been has emphasis Particular visitors. and employees the for information practical and detailed provides that jp/) website(http://www.ipmu. a construct to Website minute onthewebsite. one just in public general to terms scientific technical explained scientist IPMU an where Video Clips We have been making special effort special making been have We clips video short of series a Westarted improvement. operational for Award President’s 2008 the won ■ superstring theoryinoneminutevideoclip. ■ Figure 24: The website team lead by Midori Ozawa Midori by lead team website The 24: Figure Figure 23: Susanne Reffert explains about the about explains Reffert Susanne 23: Figure

IPMU ANNUAL REPORT 2008 75 Outreach and Public Communications Institute for the Physics and Mathematics of the Universe (IPMU) The University of Tokyo 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8568, Japan Tel: +81-4-7136-4940 Fax: +81-4-7136-4941 http://www.ipmu.jp/