Database Lists the Top-Cited Physics Papers
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Dark Matter and the Dinosaurs: the Astounding Interconnectedness of the Universe Pdf, Epub, Ebook
DARK MATTER AND THE DINOSAURS: THE ASTOUNDING INTERCONNECTEDNESS OF THE UNIVERSE PDF, EPUB, EBOOK Lisa Randall | 432 pages | 05 Jan 2017 | Vintage Publishing | 9780099593560 | English | London, United Kingdom Dark Matter and the Dinosaurs: The Astounding Interconnectedness of the Universe PDF Book Randall rebuts such criticism by noting that it could be "simpler to say that dark matter is like our matter, in that it's different particles with different forces", adding "the other answer is that the world's complicated, so Occam's razor isn't always the best way to go about things. There was a problem filtering reviews right now. Creo que su lectura es muy recomendable. So if, in fact, there is this dense, dark disk, there should be evidence for it in this data, which will be really exciting. Amazon Second Chance Pass it on, trade it in, give it a second life. Retrieved 12 December Or, if you are already a subscriber Sign in. Randall: I mean there is, of course, also the richness of how the pieces fit together, which is the wonderful stuff that we observe in the world. And second, once we have them, what are all the consequences? Randall conjectures that dark matter may have indirectly led to the extinction of dinosaurs. And those are worth drilling down and really focusing on. Introduction is nice and smooth. And we can see how that fits together and then how that came about and try to understand that with science, over time. Baird, Jr. Although I am left confused to wether there is evidence for periodicity or not. -
FIELDS MEDAL for Mathematical Efforts R
Recognizing the Real and the Potential: FIELDS MEDAL for Mathematical Efforts R Fields Medal recipients since inception Year Winners 1936 Lars Valerian Ahlfors (Harvard University) (April 18, 1907 – October 11, 1996) Jesse Douglas (Massachusetts Institute of Technology) (July 3, 1897 – September 7, 1965) 1950 Atle Selberg (Institute for Advanced Study, Princeton) (June 14, 1917 – August 6, 2007) 1954 Kunihiko Kodaira (Princeton University) (March 16, 1915 – July 26, 1997) 1962 John Willard Milnor (Princeton University) (born February 20, 1931) The Fields Medal 1966 Paul Joseph Cohen (Stanford University) (April 2, 1934 – March 23, 2007) Stephen Smale (University of California, Berkeley) (born July 15, 1930) is awarded 1970 Heisuke Hironaka (Harvard University) (born April 9, 1931) every four years 1974 David Bryant Mumford (Harvard University) (born June 11, 1937) 1978 Charles Louis Fefferman (Princeton University) (born April 18, 1949) on the occasion of the Daniel G. Quillen (Massachusetts Institute of Technology) (June 22, 1940 – April 30, 2011) International Congress 1982 William P. Thurston (Princeton University) (October 30, 1946 – August 21, 2012) Shing-Tung Yau (Institute for Advanced Study, Princeton) (born April 4, 1949) of Mathematicians 1986 Gerd Faltings (Princeton University) (born July 28, 1954) to recognize Michael Freedman (University of California, San Diego) (born April 21, 1951) 1990 Vaughan Jones (University of California, Berkeley) (born December 31, 1952) outstanding Edward Witten (Institute for Advanced Study, -
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. -
What's Inside
Newsletter A publication of the Controlled Release Society Volume 32 • Number 1 • 2015 What’s Inside 42nd CRS Annual Meeting & Exposition pH-Responsive Fluorescence Polymer Probe for Tumor pH Targeting In Situ-Gelling Hydrogels for Ophthalmic Drug Delivery Using a Microinjection Device Interview with Paolo Colombo Patent Watch Robert Langer Awarded the Queen Elizabeth Prize for Engineering Newsletter Charles Frey Vol. 32 • No. 1 • 2015 Editor Table of Contents From the Editor .................................................................................................................. 2 From the President ............................................................................................................ 3 Interview Steven Giannos An Interview with Paolo Colombo from University of Parma .............................................. 4 Editor 42nd CRS Annual Meeting & Exposition .......................................................................... 6 What’s on Board Access the Future of Delivery Science and Technology with Key CRS Resources .............. 9 Scientifically Speaking pH-Responsive Fluorescence Polymer Probe for Tumor pH Targeting ............................. 10 Arlene McDowell Editor In Situ-Gelling Hydrogels for Ophthalmic Drug Delivery Using a Microinjection Device ........................................................................................................ 12 Patent Watch ................................................................................................................... 14 Special -
Anomalies, Dualities, and Topology of D = 6 N = 1 Superstring Vacua
RU-96-16 NSF-ITP-96-21 CALT-68-2057 IASSNS-HEP-96/53 hep-th/9605184 Anomalies, Dualities, and Topology of D =6 N =1 Superstring Vacua Micha Berkooz,1 Robert G. Leigh,1 Joseph Polchinski,2 John H. Schwarz,3 Nathan Seiberg,1 and Edward Witten4 1Department of Physics, Rutgers University, Piscataway, NJ 08855-0849 2Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106-4030 3California Institute of Technology, Pasadena, CA 91125 4Institute for Advanced Study, Princeton, NJ 08540 Abstract We consider various aspects of compactifications of the Type I/heterotic Spin(32)/Z2 theory on K3. One family of such compactifications in- cludes the standard embedding of the spin connection in the gauge group, and is on the same moduli space as the compactification of arXiv:hep-th/9605184v1 25 May 1996 the heterotic E8 × E8 theory on K3 with instanton numbers (8,16). Another class, which includes an orbifold of the Type I theory re- cently constructed by Gimon and Polchinski and whose field theory limit involves some topological novelties, is on the moduli space of the heterotic E8 × E8 theory on K3 with instanton numbers (12,12). These connections between Spin(32)/Z2 and E8 × E8 models can be demonstrated by T duality, and permit a better understanding of non- perturbative gauge fields in the (12,12) model. In the transformation between Spin(32)/Z2 and E8 × E8 models, the strong/weak coupling duality of the (12,12) E8 × E8 model is mapped to T duality in the Type I theory. The gauge and gravitational anomalies in the Type I theory are canceled by an extension of the Green-Schwarz mechanism. -
Understanding a Warped Cosmos
Lisa Randall. “One challenge today is to see what you can do with large amounts of data, to study fundamental properties, not just questions of how electromagnetism gives rise to certain things. Can we actually see deviations from what you would predict in conventional theories?” Rami Shllush Understanding a warped cosmos What’s the connection between dinosaurs and dark matter? What is the glue that holds the universe together? Is there a fourth - and fifth - dimension? These are just some of the questions that occupy Lisa Randall, the first female physicist to get tenure at Princeton, Harvard and MIT ■ ״ ״r* י •• 1 י׳ The CERN facility, near Geneva. “We need higher-energy machines and particle Illustration of a large asteroid colliding with Earth over the Yucatan Peninsula, in accelerators,” says Randall, “but to really see new things, we need even more Mexico. The impact of such occurrences are thought to have led to the death of the powerful machines.” Richard Juillian/AFP dinosaurs some 65 million years ago. Mark Garlick/Science Photo Libra Ido Efrati in the sciences. In 2016 he mystery of the universe,be seen as evidence that dark matter Over the years, studies have specializes interview with The New she and the many riddles that re- interacted in some way with hydrogen mapped the presence of dark matter Yorker, related that in her teens she had fre- main open about itcan be ex- atoms, thus leadingto the loweringof in various placesin the universe,in- the of the dark matter. our emplifiedin myriad ways. temperature eludingin the center of galaxy,the quent confrontations with her mother, to One of the most frustratingPhysicistsresponding the article Milky Way. -
Some Comments on Physical Mathematics
Preprint typeset in JHEP style - HYPER VERSION Some Comments on Physical Mathematics Gregory W. Moore Abstract: These are some thoughts that accompany a talk delivered at the APS Savannah meeting, April 5, 2014. I have serious doubts about whether I deserve to be awarded the 2014 Heineman Prize. Nevertheless, I thank the APS and the selection committee for their recognition of the work I have been involved in, as well as the Heineman Foundation for its continued support of Mathematical Physics. Above all, I thank my many excellent collaborators and teachers for making possible my participation in some very rewarding scientific research. 1 I have been asked to give a talk in this prize session, and so I will use the occasion to say a few words about Mathematical Physics, and its relation to the sub-discipline of Physical Mathematics. I will also comment on how some of the work mentioned in the citation illuminates this emergent field. I will begin by framing the remarks in a much broader historical and philosophical context. I hasten to add that I am neither a historian nor a philosopher of science, as will become immediately obvious to any expert, but my impression is that if we look back to the modern era of science then major figures such as Galileo, Kepler, Leibniz, and New- ton were neither physicists nor mathematicans. Rather they were Natural Philosophers. Even around the turn of the 19th century the same could still be said of Bernoulli, Euler, Lagrange, and Hamilton. But a real divide between Mathematics and Physics began to open up in the 19th century. -
2005 March Meeting Gears up for Showtime in the City of Angels
NEWS See Pullout Insert Inside March 2005 Volume 14, No. 3 A Publication of The American Physical Society http://www.aps.org/apsnews 2005 March Meeting Gears Up for Reborn Nicholson Medal Showtime in the City of Angels Stresses Mentorship Established in memory of Dwight The latest research relevance to the design R. Nicholson of the University of results on the spin Hall and creation of next- Iowa, who died tragically in 1991, effect, new chemistry generation nano-electro- and first given in 1994, the APS with superatoms, and mechanical systems Nicholson Medal has been reborn several sessions cel- (NEMS). Moses Chan this year as an award for human ebrating all things (Pennsylvania State Uni- outreach. According to the infor- Einstein are among the versity) will talk about mation contained on the Medal’s expected highlights at evidence of Bose-Einstein web site (http://www.aps.org/praw/ the 2005 APS March condensation in solid he- nicholso/index.cfm), the Nicholson meeting, to be held later lium, while Stanford Medal for Human Outreach shall Photo Credit: Courtesy of the Los Angeles Convention Center this month in Los University’s Zhixun Shen be awarded to a physicist who ei- Angeles, California. The will discuss how photo- ther through teaching, research, or Photo from Iowa University Relations. conference is the largest physics Boltzmann, and Ehrenfest, but also emission spectroscopy has science-related activities, Dwight R. Nicholson. meeting of the year, featuring some Emmy Noether, one of the rare emerged as a leading tool to push -
Round Table Talk: Conversation with Nathan Seiberg
Round Table Talk: Conversation with Nathan Seiberg Nathan Seiberg Professor, the School of Natural Sciences, The Institute for Advanced Study Hirosi Ooguri Kavli IPMU Principal Investigator Yuji Tachikawa Kavli IPMU Professor Ooguri: Over the past few decades, there have been remarkable developments in quantum eld theory and string theory, and you have made signicant contributions to them. There are many ideas and techniques that have been named Hirosi Ooguri Nathan Seiberg Yuji Tachikawa after you, such as the Seiberg duality in 4d N=1 theories, the two of you, the Director, the rest of about supersymmetry. You started Seiberg-Witten solutions to 4d N=2 the faculty and postdocs, and the to work on supersymmetry almost theories, the Seiberg-Witten map administrative staff have gone out immediately or maybe a year after of noncommutative gauge theories, of their way to help me and to make you went to the Institute, is that right? the Seiberg bound in the Liouville the visit successful and productive – Seiberg: Almost immediately. I theory, the Moore-Seiberg equations it is quite amazing. I don’t remember remember studying supersymmetry in conformal eld theory, the Afeck- being treated like this, so I’m very during the 1982/83 Christmas break. Dine-Seiberg superpotential, the thankful and embarrassed. Ooguri: So, you changed the direction Intriligator-Seiberg-Shih metastable Ooguri: Thank you for your kind of your research completely after supersymmetry breaking, and many words. arriving the Institute. I understand more. Each one of them has marked You received your Ph.D. at the that, at the Weizmann, you were important steps in our progress. -
Tao Awarded Nemmers Prize
Tao Awarded Nemmers Prize Northwestern University has announced that numerous other awards, including the Terence Chi-Shen Tao has received the 2010 Salem Prize (2000), the Bôcher Prize Frederic Esser Nemmers Prize in Mathematics, be- (2002), the Clay Research Award of the lieved to be one of the largest monetary awards in Clay Mathematics Institute (2003), the mathematics in the United States, for outstanding SASTRA Ramanujan Prize (2006), the achievements in the discipline. Awarded to schol- Ostrowski Prize (2007), the Waterman ars who made major contributions to new knowl- Award (2008), and the King Faisal Prize edge or to the development of significant new (cowinner, 2010). He is a Fellow of the modes of analysis, the prize carries a US$175,000 Royal Society, the Australian Academy stipend. of Sciences (corresponding member), Tao, a professor of mathematics at University the U.S. National Academy of Sciences of California, Los Angeles, was honored “for math- (foreign member), and the American ematics of astonishing breadth, depth and original- Academy of Arts and Sciences. ity”. In connection with the award, Tao will deliver Tao’s research interests include Terence Tao public lectures and participate in other scholarly harmonic analysis, partial dif- activities at Northwestern during the 2010–2011 ferential equations, combinatorics, and num- and 2011–2012 academic years. ber theory. He is an associate editor of the Tao, who has been dubbed the “Mozart of American Journal of Mathematics (2002–) and Math”, was born in Adelaide, Australia, in 1975. of Dynamics of Partial Differential Equations He started to learn calculus when he was seven (2003–) and an editor of the Journal of the Ameri- years old. -
David Olive: His Life and Work
David Olive his life and work Edward Corrigan Department of Mathematics, University of York, YO10 5DD, UK Peter Goddard Institute for Advanced Study, Princeton, NJ 08540, USA St John's College, Cambridge, CB2 1TP, UK Abstract David Olive, who died in Barton, Cambridgeshire, on 7 November 2012, aged 75, was a theoretical physicist who made seminal contributions to the development of string theory and to our understanding of the structure of quantum field theory. In early work on S-matrix theory, he helped to provide the conceptual framework within which string theory was initially formulated. His work, with Gliozzi and Scherk, on supersymmetry in string theory made possible the whole idea of superstrings, now understood as the natural framework for string theory. Olive's pioneering insights about the duality between electric and magnetic objects in gauge theories were way ahead of their time; it took two decades before his bold and courageous duality conjectures began to be understood. Although somewhat quiet and reserved, he took delight in the company of others, generously sharing his emerging understanding of new ideas with students and colleagues. He was widely influential, not only through the depth and vision of his original work, but also because the clarity, simplicity and elegance of his expositions of new and difficult ideas and theories provided routes into emerging areas of research, both for students and for the theoretical physics community more generally. arXiv:2009.05849v1 [physics.hist-ph] 12 Sep 2020 [A version of section I Biography is to be published in the Biographical Memoirs of Fellows of the Royal Society.] I Biography Childhood David Olive was born on 16 April, 1937, somewhat prematurely, in a nursing home in Staines, near the family home in Scotts Avenue, Sunbury-on-Thames, Surrey. -
Minutes High Energy Physics Advisory Panel October 22–23, 2009 Hilton Embassy Row Washington, D.C
Draft Minutes High Energy Physics Advisory Panel October 22–23, 2009 Hilton Embassy Row Washington, D.C. HEPAP members present: Hiroaki Aihara Wim Leemans Marina Artuso Daniel Marlow Alice Bean Ann Nelson Patricia Burchat Paris Sphicas Lance Dixon Kate Scholberg Graciela Gelmini Melvyn J. Shochet, Chair Larry Gladney Henry Sobel Boris Kayser Maury Tigner Robert Kephart William Trischuk Steven Kettell Herman White HEPAP members absent: Priscilla Cushman Lisa Randall Sarah Eno Sally Seidel Stephen Olson Also participating: Barry Barish, Director, Global Design Effort, International Linear Collider Frederick Bernthal, President, Universities Research Association Glen Crawford, HEPAP Designated Federal Officer, Office of High Energy Physics, Office of Science, Department of Energy Joseph Dehmer, Director, Division of Physics, National Science Foundation Cristinel Diaconu, Directeur de Recherche, IN2P3/CNRS, France Robert Diebold, Diebold Consulting Marvin Goldberg, Program Director, Division of Physics, National Science Foundation Judith Jackson, Director, Office of Communication, Fermi National Accelerator Laboratory Young-Kee Kim, Deputy Director, Fermi National Accelerator Laboratory John Kogut, HEPAP Executive Secretary, Office of High Energy Physics, Office of Science, Department of Energy Dennis Kovar, Associate Director, Office of High Energy Physics, Office of Science, Department of Energy Kevin Lesko, Nuclear Science Division, Lawrence Berkeley National Laboratory Marsha Marsden, Office of High Energy Physics, Office of Science,