DNVA Årsrapport 2019
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Inflation, Large Branes, and the Shape of Space
Inflation, Large Branes, and the Shape of Space Brett McInnes National University of Singapore email: [email protected] ABSTRACT Linde has recently argued that compact flat or negatively curved spatial sections should, in many circumstances, be considered typical in Inflationary cosmologies. We suggest that the “large brane instability” of Seiberg and Witten eliminates the negative candidates in the context of string theory. That leaves the flat, compact, three-dimensional manifolds — Conway’s platycosms. We show that deep theorems of Schoen, Yau, Gromov and Lawson imply that, even in this case, Seiberg-Witten instability can be avoided only with difficulty. Using a specific cosmological model of the Maldacena-Maoz type, we explain how to do this, and we also show how the list of platycosmic candidates can be reduced to three. This leads to an extension of the basic idea: the conformal compactification of the entire Euclidean spacetime also has the topology of a flat, compact, four-dimensional space. arXiv:hep-th/0410115v2 19 Oct 2004 1. Nearly Flat or Really Flat? Linde has recently argued [1] that, at least in some circumstances, we should regard cosmological models with flat or negatively curved compact spatial sections as the norm from an Inflationary point of view. Here we wish to argue that cosmic holography, in the novel form proposed by Maldacena and Maoz [2], gives a deep new interpretation of this idea, and also sharpens it very considerably to exclude the negative case. This focuses our attention on cosmological models with flat, compact spatial sections. Current observations [3] show that the spatial sections of our Universe [as defined by observers for whom local isotropy obtains] are fairly close to being flat: the total density parameter Ω satisfies Ω = 1.02 0.02 at 95% confidence level, if we allow the imposition ± of a reasonable prior [4] on the Hubble parameter. -
Eternal Inflation and Its Implications
IOP PUBLISHING JOURNAL OF PHYSICS A: MATHEMATICAL AND THEORETICAL J. Phys. A: Math. Theor. 40 (2007) 6811–6826 doi:10.1088/1751-8113/40/25/S25 Eternal inflation and its implications Alan H Guth Center for Theoretical Physics, Laboratory for Nuclear Science, and Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA E-mail: [email protected] Received 8 February 2006 Published 6 June 2007 Online at stacks.iop.org/JPhysA/40/6811 Abstract Isummarizetheargumentsthatstronglysuggestthatouruniverseisthe product of inflation. The mechanisms that lead to eternal inflation in both new and chaotic models are described. Although the infinity of pocket universes produced by eternal inflation are unobservable, it is argued that eternal inflation has real consequences in terms of the way that predictions are extracted from theoretical models. The ambiguities in defining probabilities in eternally inflating spacetimes are reviewed, with emphasis on the youngness paradox that results from a synchronous gauge regularization technique. Although inflation is generically eternal into the future, it is not eternal into the past: it can be proven under reasonable assumptions that the inflating region must be incomplete in past directions, so some physics other than inflation is needed to describe the past boundary of the inflating region. PACS numbers: 98.80.cQ, 98.80.Bp, 98.80.Es 1. Introduction: the successes of inflation Since the proposal of the inflationary model some 25 years ago [1–4], inflation has been remarkably successful in explaining many important qualitative and quantitative properties of the universe. In this paper, I will summarize the key successes, and then discuss a number of issues associated with the eternal nature of inflation. -
2012-2013 Chair James Rosenzweig
Department of Physics Astronomy ANNUAL REPORT 2013 219728_AnnualReport.indd 1 11/18/13 4:02 PM UCLA Physics and Astronomy Department 2012-2013 Chair James Rosenzweig Chief Administrative Officer Will Spencer Feature Article Eric Hudson Editorial Assistants Corinna Koehnenkamp, D.L. MacLaughlan-Dumes, Laurie Ultan-Thomas Design Mary Jo Robertson © 2013 by the Regents of the University of California All rights reserved. Requests for additional copies of the publication UCLA Department of Physics and Astronomy 2012-2013 Annual Report may be sent to: Office of the Chair UCLA Department of Physics and Astronomy 430 Portola Plaza Box 951547 Los Angeles California 90095-1547 For more information on the Department see our website: http://www.pa.ucla.edu/ UCLA DEPARTMENT OF PHYSICS & ASTRONOMY 219728_AnnualReport.indd 2 11/18/13 4:02 PM Department of Physics Astronomy& 2013 Annual Report UNIVERSITY OF CALIFORNIA, LOS ANGELES 219728_AnnualReport.indd 3 11/18/13 4:02 PM CONTENTS FEATURE ARTICLE: P.7 “Harnessing quantum interactions for the future of science and technology” GIVING TO THE DEPARTMENT P.15 UCLA ALUMNI P.18 ASTRONOMY & ASTROPHYSICS P.19 ASTROPARTICLE PHYSICS P.31 PHYSICS RESEARCH HIGHLIGHTS P.37 PHYSICS & ASTRONOMY FACULTY/RESEARCHERS P.60 DEPARTMENT NEWS P.61 OUTREACH-ASTRONOMY LIVE P. 64 GRADUATION 2012-13 P.66 219728_AnnualReport.indd 4 11/18/13 4:02 PM Message from the Chair As Chair of the UCLA Department of Physics and Astronomy, it is with pride that I present to you our 2013 Annual Report. This document is intended to give an overview of the departmental accomplishments recorded in the last year, extending from recog- nition of faculty excellence in teaching and research, to the welcoming of new members to our ranks. -
Vedtaksprotokoll Protokoll Fra Fullmaktkomiteen 2014
VEDTAKSPROTOKOLL fra Arbeiderpartiets ekstraordinære landsmøte lørdag 14. juni 2014 i Oslo Kongressenter, Folkets Hus, Oslo. Lørdag 14. juni: SAK 1 - ÅPNING Landsmøtet åpnet kl. 11.30 med et kulturelt program med Bjørn Eidsvåg. Jens Stoltenberg takket Bjørn Eidsvåg og overrakte blomster. Jens Stoltenberg ønsker velkommen til Arbeiderpartiets ekstraordinære landsmøte. Han ber landsmøtet reise seg og han holder en minnetale over Reiulf Steen som døde torsdag 5. juni. Landsmøtet synger «De unge slekter» med Frank Havrøy som forsanger. SAK 2 – KONSTITUERING Helga Pedersen fortar konstitueringen av landsmøtet, og ga ordet til lederen av Fullmaktskomiteen, Reidar Åsgård. a) Fullmaktskomiteens innstilling Lederen i fullmaktskomiteen, Reidar Åsgård, la fram følgende innstilling: PROTOKOLL FRA FULLMAKTKOMITEEN 2014 Fullmakts- og beretningskomiteen ble oppnevnt av Sentralstyret i møte 8. april 2013 i overensstemmelse med partiets lover, paragraf 6, punkt 4. Komiteen fikk følgende sammensetning: 1. Reidar Åsgård – leder Hedmark 2. Wenche Davidsen Vestfold 3. Siv Dagny Larssen Aasvik Nordland Svein Bjørn Aasnes Partikontoret sekretær Arbeiderpartiets landsstyremøte mandag 31. mars 2014 gjorde i sak 12/14: Ekstraordinært Landsmøte 2014, følgende vedtak: VALG AV FULLMAKTSKOMITE Jfr. partiets vedtekter §7.4 - «… Før landsmøtet trer sammen, skal fullmaktene være gjennomgått av en nemnd som sentralstyret oppnevner.» F:/ARKIV/1.02/000524.DOK. 1 Som følge av at det er de samme utsendingene som skal møte til det ekstraordinære landsmøtet, bør sentralstyret re-oppnevne samme fullmaktskomite som fungerte i forkant og under vårt 64. ordinære Landsmøte i 2013. Innstilling – forslag til vedtak: Sentralstyret re-oppnevner fullmaktskomiteen som ble valgt i forkant av partiets 64. ordinære landsmøte i 2013, disse er: Reidar Åsgård, leder, Hedmark Wenche Davidsen, Vestfold Siv Dagny Larssen Aasvik, Nordland Svein Bjørn Aasnes, partikontoret, sekretær Vedtak: Innstillingen enstemmig vedtatt. -
Reversed out (White) Reversed
Berkeley rev.( white) Berkeley rev.( FALL 2014 reversed out (white) reversed IN THIS ISSUE Berkeley’s Space Sciences Laboratory Tabletop Physics Bringing More Women into Physics ALUMNI NEWS AND MORE! Cover: The MAVEN satellite mission uses instrumentation developed at UC Berkeley's Space Sciences Laboratory to explore the physics behind the loss of the Martian atmosphere. It’s a continuation of Berkeley astrophysicist Robert Lin’s pioneering work in solar physics. See p 7. photo credit: Lockheed Martin Physics at Berkeley 2014 Published annually by the Department of Physics Steven Boggs: Chair Anil More: Director of Administration Maria Hjelm: Director of Development, College of Letters and Science Devi Mathieu: Editor, Principal Writer Meg Coughlin: Design Additional assistance provided by Sarah Wittmer, Sylvie Mehner and Susan Houghton Department of Physics 366 LeConte Hall #7300 University of California, Berkeley Berkeley, CA 94720-7300 Copyright 2014 by The Regents of the University of California FEATURES 4 12 18 Berkeley’s Space Tabletop Physics Bringing More Women Sciences Laboratory BERKELEY THEORISTS INVENT into Physics NEW WAYS TO SEARCH FOR GOING ON SIX DECADES UC BERKELEY HOSTS THE 2014 NEW PHYSICS OF EDUCATION AND SPACE WEST COAST CONFERENCE EXPLORATION Berkeley theoretical physicists Ashvin FOR UNDERGRADUATE WOMEN Vishwanath and Surjeet Rajendran IN PHYSICS Since the Space Lab’s inception are developing new, small-scale in 1959, Berkeley physicists have Women physics students from low-energy approaches to questions played important roles in many California, Oregon, Washington, usually associated with large-scale of the nation’s space-based scientific Alaska, and Hawaii gathered on high-energy particle experiments. -
Our Cosmic Origins
Chapter 5 Our cosmic origins “In the beginning, the Universe was created. This has made a lot of people very angry and has been widely regarded as a bad move”. Douglas Adams, in The Restaurant at the End of the Universe “Oh no: he’s falling asleep!” It’s 1997, I’m giving a talk at Tufts University, and the legendary Alan Guth has come over from MIT to listen. I’d never met him before, and having such a luminary in the audience made me feel both honored and nervous. Especially nervous. Especially when his head started slumping toward his chest, and his gaze began going blank. In an act of des- peration, I tried speaking more enthusiastically and shifting my tone of voice. He jolted back up a few times, but soon my fiasco was complete: he was o↵in dreamland, and didn’t return until my talk was over. I felt deflated. Only much later, when we became MIT colleagues, did I realize that Alan falls asleep during all talks (except his own). In fact, my grad student Adrian Liu pointed out that I’ve started doing the same myself. And that I’ve never noticed that he does too because we always go in the same order. If Alan, I and Adrian sit next to each other in that order, we’ll infallibly replicate a somnolent version of “the wave” that’s so popular with soccer spectators. I’ve come to really like Alan, who’s as warm as he’s smart. Tidiness isn’t his forte, however: the first time I visited his office, I found most of the floor covered with a thick layer of unopened mail. -
Higgs Inflation
Higgs inflation Javier Rubio Institut fur¨ Theoretische Physik, Ruprecht-Karls-Universitat¨ Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany —————————————————————————————————————————— Abstract The properties of the recently discovered Higgs boson together with the absence of new physics at collider experiments allows us to speculate about consistently extending the Standard Model of particle physics all the way up to the Planck scale. In this context, the Standard Model Higgs non- minimally coupled to gravity could be responsible for the symmetry properties of the Universe at large scales and for the generation of the primordial spectrum of curvature perturbations seeding structure formation. We overview the minimalistic Higgs inflation scenario, its predictions, open issues and extensions and discuss its interplay with the possible metastability of the Standard Model vacuum. —————————————————————————————————————————— arXiv:1807.02376v3 [hep-ph] 13 Mar 2019 Email: [email protected] 1 Contents 1 Introduction and summary3 2 General framework7 2.1 Induced gravity . .7 2.2 Higgs inflation from approximate scale invariance . .8 2.3 Tree-level inflationary predictions . 11 3 Effective field theory interpretation 14 3.1 The cutoff scale . 14 3.2 Relation between high- and low-energy parameters . 16 3.3 Potential scenarios and inflationary predictions . 17 3.4 Vacuum metastability and high-temperature effects . 21 4 Variations and extensions 22 4.1 Palatini Higgs inflation . 23 4.2 Higgs-Dilaton model . 24 5 Concluding remarks 26 6 Acknowledgments 26 2 1 Introduction and summary Inflation is nowadays a well-established paradigm [1–6] able to explain the flatness, homogene- ity and isotropy of the Universe and the generation of the primordial density fluctuations seeding structure formation [7–10]. -
Stortingstidende Referat Fra Møter I Stortinget
Stortingstidende Referat fra møter i Stortinget Nr. 91 · 17. juni Sesjonen 2018–2019 2019 17. jun. – Dagsorden 5035 Møte mandag den 17. juni 2019 kl. 10 umenneskelig eller nedverdigende behandling eller straff ved frihetsberøvelse President: To n e W i l h e l m s e n Tr ø e n (Innst. 397 S (2018–2019), jf. Dokument 4:1 (2018– Dagsorden (nr. 91): 2019)) 9. Innstilling fra utdannings- og forskningskomiteen 1. Innstilling fra kommunal- og forvaltningskomiteen om Representantforslag fra stortingsrepresentan- om Representantforslag fra stortingsrepresentan- tene Mona Fagerås, Sheida Sangtarash, Freddy tene Karin Andersen, Freddy André Øvstegård, André Øvstegård og Kari Elisabeth Kaski om gratis Sheida Sangtarash, Petter Eide og Lars Haltbrekken skolemat til alle om å legge til rette for at alle norske barn av for- (Innst. 380 S (2018–2019), jf. Dokument 8:124 S eldre med IS-tilknytning kan komme til Norge, (2018–2019)) samt sikre god barnefaglig oppfølging etter hjem- 10. Innstilling fra utdannings- og forskningskomiteen komst til Norge om Representantforslag fra stortingsrepresentan- (Innst. 395 S (2018–2019), jf. Dokument 8:144 S tene Martin Henriksen, Jorodd Asphjell, Torstein (2018–2019)) Tvedt Solberg, Nina Sandberg, Hadia Tajik, Arild 2. Innstilling fra energi- og miljøkomiteen om Sam- Grande, Eigil Knutsen, Siri Gåsemyr Staalesen og tykke til deltakelse i en beslutning i EØS-komiteen Jonas Gahr Støre om en bred kompetansereform om innlemmelse i EØS-avtalen av rettsakter som for arbeidslivet inngår i felles oppfyllelse med EU av utslippsmålet (Innst. 379 S (2018–2019), jf. Dokument 8:129 S for 2030 (2018–2019)) (Innst. 401 S (2018–2019), jf. -
Prop. 1 S (2018-2019) Proposisjon Til Stortinget
Ryggbredde beregnet til 392 sider = 19 mm Bestilling av publikasjonar 1 S (2018 Prop. Offentlege institusjonar: Tryggings- og serviceorganisasjonen til departementa Internett: www.publikasjoner.dep.no E-post: [email protected] Telefon: 22 24 00 00 – 2019) Privat sektor: Internett: www.fagbokforlaget.no/offpub E-post: [email protected] Telefon: 55 38 66 00 Publikasjonane er også tilgjengelege på Prop. 1 S www.regjeringen.no (2018 – 2019) Trykk: 07 Media AS – 10/2018 Proposisjon til Stortinget (forslag til stortingsvedtak) Det kongelege kunnskapsdepartement KET T ER RY M K Ø K J E L R I I M FOR BUDSJETTÅRET 2019 0 7 9 7 M 3 ED 0 IA – 2041 Utgiftskapittel: 200–292 og 2410 Inntektskapittel: 3200–3292, 5310 og 5617 Prop. 1 S (2018 – 2019) Proposisjon til Stortinget (forslag til stortingsvedtak) FOR BUDSJETTÅRET 2019 Utgiftskapittel: 200–292 og 2410 Inntektskapittel: 3200–3292, 5310 og 5617 Innhald Del I Oversikt over Programkategori 07.30 Barnehagar ............... 133 budsjettforslaget Kap. 231 Barnehagar ..................................... 141 frå Kunnskapsdepartementet .. 11 Programkategori 07.40 Høgre yrkesfagleg 1Hovudinnleiing ............................ 13 utdanning .......................................................... 146 1.1 Kunnskap gir moglegheiter ......... 13 Kap. 240 Fagskolar ........................................ 149 1.2 Hovudprioriteringar ....................... 18 Kap. 241 Felles tiltak for fagskolesektoren ............................ 151 2 Oversikt over forslaget til budsjett for Programkategori -
MIT Briefing Book 2015 April Edition
MIT Briefing Book 2015 April edition Massachusetts Institute of Technology MIT Briefing Book © 2015, Massachusetts Institute of Technology April 2015 Cover images: Christopher Harting Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge, Massachusetts 02139-4307 Telephone Number 617.253.1000 TTY 617.258.9344 Website http://web.mit.edu/ The Briefing Book is researched and written by a variety of MIT faculty and staff, in particular the members of the Office of the Provost’s Institutional Research group, Industrial Liaison Program, Student Financial Services, and the MIT Washington Office. Executive Editors Maria T. Zuber, Vice President for Research [email protected] William B. Bonvillian, Director, MIT Washington Office [email protected] Editors Shirley Wong [email protected] Lydia Snover, to whom all questions should be directed [email protected] 2 MIT Briefing Book MIT Senior Leadership President Vice President for Finance L. Rafael Reif Glen Shor Chairman of the Corporation Director, Lincoln Laboratory Robert B. Millard Eric D. Evans Provost Dean, School of Architecture and Planning Martin A. Schmidt Hashim Sarkis Chancellor Dean, School of Engineering Cynthia Barnhart Ian A. Waitz Executive Vice President and Treasurer Dean, School of Humanities, Arts, and Social Sciences Israel Ruiz Deborah K. Fitzgerald Vice President for Research Dean, School of Science Maria T. Zuber Michael Sipser Vice President Dean, Sloan School of Management Claude R. Canizares David C. Schmittlein Vice President and General Counsel Associate Provost Mark DiVincenzo Karen Gleason Chancellor for Academic Advancement Associate Provost W. Eric L. Grimson Philip S. Khoury Vice President Director of Libraries Kirk D. Kolenbrander Chris Bourg Vice President for Communications Institute Community and Equity Officer Nathaniel W. -
Dokument Nr. 15:3 (2020-2021)
Dokument 15:3 (2020–2021) Spørsmål til skriftlig besvarelse med svar Spørsmål nr. 301-450 29. oktober –13. november 2020 Innhold 301. Fra stortingsrepresentant Bård Hoksrud, vedr. Veidirektoratet får hastebehandlet godkjenningen av Åstfjordbrua og tilhørende to tunneler, besvart av samferdselsminister ................................................................................ 11 302. Fra stortingsrepresentant Mona Fagerås, vedr. OsloMet, besvart av forsknings- og høyere utdanningsminister ......................................................................................................................................................................... 12 303. Fra stortingsrepresentant Eigil Knutsen, vedr. nye SAR Queen-helikoptrene, besvart av justis- og beredskapsminister ......................................................................................................................................................................................... 13 304. Fra stortingsrepresentant Geir Pollestad, vedr. kinodrift i Time kommune, besvart av kultur- og likestillingsminister ......................................................................................................................................................................................... 13 305. Fra stortingsrepresentant Marit Knutsdatter Strand, vedr. Lærerundersøkelsen, besvart av kunnskaps- og integreringsminister ...................................................................................................................................................................................... -
CUBA NACIONALES 1. Cuba Crea Fondo Para Financiar La Ciencia
EDITOR: NOEL GONZÁLEZ GOTERA Nueva Serie. Número 167 Diseño: Lic. Roberto Chávez y Liuder Machado. Semana 201214 - 261214 Foto: Lic. Belkis Romeu e Instituto Finlay La Habana, Cuba. CUBA NACIONALES Variadas 1. Cuba crea fondo para financiar la ciencia. Radio Rebelde, 2014.12.17 - 22:16:14 / [email protected] / Sandy Carbonell Ramos… Cuba impulsará el financiamiento de la actividad científica con el funcionamiento a partir de enero próximo del Fondo de Ciencia y Tecnología (FONDIT), informo este miércoles la ministra del sector en la Asamblea Nacional del Poder Popular. Con la presencia del miembro del Buro Político y Primer Vicepresidente de los Consejos de Estado y de Ministros, Miguel Díaz- Canel Bermúdez, la titular de Ciencia, Tecnología y Medio Ambiente (Citma), Elba Rosa Pérez Montoya, precisó que ese fondo ya existe y será anunciado ante los parlamentarios cubanos. Al intervenir en la Comisión de Educación, Cultura, Ciencia, Tecnología y Medio Ambiente, Pérez Montoya aseguró que también se ha avanzado en la política del Sistema de Ciencia, cuya propuesta está elaborada y a disposición de la Comisión Permanente de Implementación y Desarrollo de los Lineamientos para su posterior presentación al Consejo de Ministros. Las declaraciones de la ministra respondían además a los planteamientos del diputado por el municipio habanero de La Lisa, Yury Valdés Blandín, quien expuso los criterios de su comisión sobre el 1 reordenamiento de los centros de ciencia e innovación tecnológica, tema central del debate. Valdés Blandín explicó cómo a pesar de los atrasos en este proceso, los señalamientos hechos para su avance también se ven reflejados en el Decreto Ley 323 del CITMA aprobado en agosto último para regir esta tarea.