Events Archive

High Energy Physcis Seminar- Sue Ann Koay-"Excavating for SUSY: A dark matter search at the Large Hadron Collider experiment"
Mon, Dec 19, 2011, 2:45 pm4:15 pm
One of the challenges of 21st century particle physics is a deficit of observations to constrain/shape hypotheses for what may be "the"Theory Of Everything, or at least a next stage in our development of such. I present one of the searches motivated by cosmological evidence for particulate dark matter, which aims to unearth signals in the wide…
Physics Holiday Party
Fri, Dec 16, 2011, 3:00 pm6:00 pm
Please join us today at 3pm for some Holiday fun including caroling by graduate students!

High Energy Theory Seminar - Jumpstarting the all-loop S-matrix of N=4 super Yang-Mills - Simon Caron-Huot, IAS
Fri, Dec 16, 2011, 1:30 pm3:00 pm
I will discuss recent progress in understanding loop-level scattering amplitudes in planar N=4 SYM.Compared with previous efforts aimed at exploiting integrability of this gauge theory,our approach differs mainly in its focus on canonical infrared-safe quantities, and its use of so-called momentum twistor variables.I will discuss how the first…
Gravity Group Astrophysics|Cosmology Lunch: Immanuel Buder (KICP, University of Chicago), "CMB Polarization Results from the QUIET Experiment"
Fri, Dec 16, 2011, 12:00 pm1:30 pm
Abstract: Inflationary cosmology postulates that the Universe underwent a period of accelerated expansion in the first $10^{-30}$,s after the Big Bang. Inflationary models are attractive because they solve outstanding problems in cosmology: the origin of structure, the absence of monopoles, and the horizon and flatness problems. Although…
Physics Colloquium: Nigel Goldenfeld
Thu, Dec 15, 2011, 4:30 pm6:00 pm
“Statistical mechanics of the genetic code: a glimpse of early life?” Relics of early life, preceding even the last universal common ancestor of all life on Earth, are present in the structure of the modern day canonical genetic code. In this talk, I will draw attention to these relics, and discuss their interpretation from the perspective of…
Statistical Mechanics Seminar, P. Kleban, "Crossing probabilities, their densities, and modular forms"
Wed, Dec 14, 2011, 2:00 pm3:30 pm
Abstract: A crossing probability is the probability of finding a critical cluster that touches specified boundary arcs. We consider formulas for the prototypical example, the horizontal crossing probability Ph, which gives the probability of connecting the left and right sides of a rectangle containing a system at the two-dimensional…
Astroparticle Seminar: Karen Andeen, Rutgers, "First Measurement of Cosmic Ray Composition using the IceCube Neutrino Observator"
Tue, Dec 13, 2011, 3:00 pm4:00 pm
Speaker:Karen Andeen, CMS Collaboration,Rutgers the State University of New Jersey; IceCube Collaboration,University of Wisconsin-Madison, Host: Professor Cristiano Galbiati The recently completed IceCube Neutrino Observatory instruments a volume of roughly one cubic kilometer (one gigaton) of Antarctic…
High Energy Theory Informal Seminar - Multiplicities from black-hole formation in heavy-ion collisions - Anastasios Taliotis - University of Crete
Tue, Dec 13, 2011, 12:30 pm2:30 pm
Abstract: The formation of trapped surfaces in the head-on collision of shock waves in conformal and non-conformal backgrounds is investigated. The backgrounds include all interesting confining and non-confining backgrounds that may be relevant for QCD. Several transverse profiles of the shocks are investigated including distributions that fall…
Condensed Matter Seminar, Emanuele Dalla Torre, "Non-equilibrium quantum critical states: a real-time RG approach"
Mon, Dec 12, 2011, 1:15 pm2:30 pm
Abstract: Equilibrium thermal noise is known to destroy the scale invariance of quantum critical points, through the introduction of a finite thermal length. What are the effects of non-equilibrium time-dependent noise? In two recent papers[1-2] we have considered two specific cases relevant to experiments on low-dimensional quantum systems, by…
Biophysics Seminar Series - Herbert Levine, UCSD/Rice
Mon, Dec 12, 2011, 11:45 am1:00 pm
Herbert Levine, UCSD/Rice

Astroparticle Seminar: Biagio Rossi (ETHZ) "Design, realization and operation of prototype Liquid ArgonTime Projection Chambers for future large-size
Fri, Dec 9, 2011, 3:00 pm4:00 pm
Speaker: Biagio Rossi, Post-Doc Swiss Federal Institute of Technology Zurich (ETHZ),, "Design, realization and operation of prototype Liquid ArgonTime Projection Chambers for future large-size underground neutrino observatories" Host: Professor Cristiano Galbiati

Princeton University Gravity Group Astrophysics Cosmology Lunch
Fri, Dec 9, 2011, 12:00 pm1:30 pm
“ACTPol: An instrument for small-scale CMB polarization observations” Speaker: Emily Grace, Princeton University ACTPol is a polarization sensitive upgrade to the Atacama Cosmology Telescope which aims to probe the small scale polarization anisotropy of the CMB, a signal which promises to constrain the sum of the neutrino masses and the…
Physics Colloquium: Alex Wright, Princeton University
Thu, Dec 8, 2011, 4:30 pm6:00 pm
"Taking a 'nu' Look : Studying Low Energy Solar and Terrestrial Neutrinos with Borexino" Solar neutrino experiments have taught us a great deal about neutrinos, neutrino oscillations, and the nuclear fusion reactions that power the sun. The Borexino experiment, in which the Princeton particle astrophysics group plays a leading role, has made…
Statistical Mechanics Seminar, V. Mastropietro, "Universal conductivity in graphene; some rigorous results and open problems"
Wed, Dec 7, 2011, 2:00 pm3:30 pm
Abstract: Recent experiments have found an universal value for the dynamic conductivity in graphene, fully confirming theoretical predictions based on a non interacting tight binding model. This however poses a problem since one could expect a many body renormalization of the non interacting value of the conductivity due to the interaction. In…
HET Seminar - ABJM theory as a Fermi gas - Pavel Putrov - University of Geneva
Mon, Dec 5, 2011, 2:30 pm4:00 pm
Abstract: The partition function on the three-sphere of many supersymmetric Chern-Simons-matter theories reduces, by localization, to a matrix model. In this talk I will describe a new method to study these models in the M-theory limit, but at all orders in the 1/N expansion. The method is based on reformulating the matrix model as the partition…
Biophysics Seminar Series - Olga Dudko, UCSD
Mon, Dec 5, 2011, 11:45 am1:00 pm
Olga Dudko, UCSD

John Estes - University of Leuven, Belgium - Locally localized gravity in string theory
Fri, Dec 2, 2011, 1:30 pm3:00 pm
Abstract: Localized gravity is the idea of obtaining an effective 4D gravitational theory from higher-dimensions without compactification. This is done by localizing a set of gravitational degrees of freedom along a 4D submanifold (brane-world), while the coupling of the brane-world to the remaining gravitational degrees of freedom is…
Princeton University Gravity Group Astrophysics|Cosmology Lunch
Fri, Dec 2, 2011, 12:00 pm1:30 pm
Title: Roche Accretion Of Stars Close To Massive Black Holes Speaker: Lixin (Jane) Dai Stanford University Abstract: We consider the Roche accretion in an Extreme Mass-Ratio Inspiral (EMRI) binary system formed by a star orbiting a massive black hole. The ultimate goal is to constrain the mass and spin of the black hole and confirm general…
CANCELED Statistical Mechanics Seminar, J Yngvason, "Interacting Bosons in Random Potentials Interacting Bosons in"
Wed, Nov 30, 2011, 2:00 pm3:30 pm
Abstract: : In contrast to the cases of single particle Schrödinger operators and ideal Bose gases the effects of random external potentials on many-body systems of interacting particles is still poorly understood. In the lecture the effects of random scatterers on the ground state of the one-dimensional Lieb-Liniger model of interacting…