# Events Archive

## Events Archive

### Biophysics Seminar Series - Dan Goldman, Georgia Tech

Mon, Oct 17, 2011, 11:45 am to 1:00 pm
Dan Goldman, Georgia Tech Title of talk: "Swimming In Sand"
Lunch at 11:45 - Talk begins at 12:00.

### Physics Colloquium: Steve Block

Thu, Oct 13, 2011, 4:30 pm to 6:00 pm

### Statistical Mechanics Seminar, G. Gallavotti, "Time Evolution and Stationary States of Classical and Quantum"

Wed, Oct 12, 2011, 2:00 pm to 3:30 pm
ABSTRACT: A chaotic system under periodic forcing can develop a periodically visited strange attractor. We discuss simple models in which the phenomenon, quite easy to see in numerical simulations, can be completely studied analytically.

### Math Phys Seminar: Simone Warzel (Tech. Univ. Munich) "Absence of mobility edge for the Anderson random potential on tree graphs at weak disorder"

Tue, Oct 11, 2011, 4:30 pm to 6:00 pm
We discuss recently established criteria for the formation of extended states on tree graphs in the presence of disorder. These criteria have the surprising implication that for bounded random potentials, as in the Anderson model, in the weak disorder regime there is no transition to a spectral regime of Anderson localization in the form usually...

### High Energy Theory Seminar - Callum Quigley - University of Chicago - Constraints on String Cosmology

Tue, Oct 11, 2011, 1:00 pm to 2:30 pm
Abstract: String theory contains sources like orientifold planes that support higher derivative interactions. These interactions make possible static flux compactifications which are forbidden in supergravity. They can also lead to violations of the strong energy condition (SEC) which is needed for an accelerating universe.

### High Energy Physics Seminar- Hiro Tanaka-"Recent results from the Tokai-to-Kamioka (T2K) Experiment"

Mon, Oct 10, 2011, 2:00 pm to 3:00 pm
I will report on recent results from the Tokai-to-Kamioka (T2K) experiment, which aims to make high sensitivity and precise studies of neutrino oscillation using an intense off-axis muon neutrino beam produced by the Japan Proton Accelerator Complex (J-PARC) and directed towards the Super Kamiokande (SK) detector 295 km away.

### High Energy Theory Seminar - Jared Kaplan, SLAC, Stanford University - "A Natural Language for AdS/CFT Correlators and the Holographic S-Matrix".

Fri, Oct 7, 2011, 1:30 pm to 3:00 pm
"We provide dramatic evidence that Mellin space' is the natural home for correlation functions in CFTs with weakly coupled bulk duals. In Mellin space, CFT correlators have poles corresponding to an OPE decomposition into left' and right' sub-correlators, in direct analogy with the factorization channels of scattering amplitudes.

### J.L. Lebowitz, Time Evolution and Stationary States of Classical and Quantum

Wed, Oct 5, 2011, 2:00 pm to 3:30 pm
Abstract: I will review both old and recent work about the time dependence and steady states of isolated macroscopic systems as well as those in contact with infinite thermal reservoirs. The emphasis will be on quantum systems and will include a discussion of the micro/macro connection in isolated ones and the derivation of a master equation...

### High Energy Theory Seminar - Bartek Czech, The University of British Columbia - "Three Perspectives on Eternal Inflation"

Tue, Oct 4, 2011, 1:00 pm to 2:30 pm
PLEASE NOTE CHANGE IN TIME AND ROOM I will discuss three ways in which (the string landscape and) eternal inflation is fun: (1) because it motivates revisiting some beautiful, classic calculations; (2) because its global description requires asking novel questions with possible broad ramifications; and (3) because it leads to experimental...

### Special CMS, Fiona Burnell Building fractional topological insulators

Fri, Sep 30, 2011, 1:30 pm to 6:00 pm
Abstract: Time-reversal invariant band insulators can be separated into two categories: ordinary' insulators and `topological' insulators. Topological band insulators have low-energy edge modes that cannot be gapped without violating time-reversal symmetry, while ordinary insulators do not.

### Physics Colloquium: Cheng Chin

Thu, Sep 29, 2011, 4:30 pm to 6:00 pm
“Observation of Scale Invariance and Quantum Criticality of Ultracold Atoms in Optical Lattices

### Statistical Mechanics Seminar - Philip W. Anderson, Some new results on the ground state of the strong coupling (solid)limit of the Bose-Hubbard Mod

Wed, Sep 28, 2011, 2:00 pm to 3:30 pm
Abstract: The Mott insulator is accepted as the appropriate ground manifold for the strongly interacting Fermion Hubbard model, with solid

### High Energy Physcis Seminar- Sanjay Padhi, CERN -"Is SUSY still alive? A CMS perspective"

Tue, Sep 27, 2011, 2:00 pm to 3:00 pm
After decades of preparation, the experiments at the Large Hadron Collider (LHC) are taking the first steps toward resolving many long-standing puzzles about fundamental physics at the weak scale. There were high expectations for early discovery of Supersymmetry (SUSY) at

### High Energy Theory Seminar - David Skinner, Perimeter Institute - Scattering Amplitudes and Wilson Loops in Twistor Space

Mon, Sep 26, 2011, 2:30 pm to 4:00 pm
Over the past few years, a remarkable duality between planar scattering amplitudes and null polygonal Wilson Loops has emerged in maximally supersymmetric Yang-Mills theory. The duality is now known to hold for arbitrary external helicities and to all orders in the 't Hooft coupling.

### High Energy Theory Seminar - Andreas Schmitt, Vienna University of Technology - "Inverse Magnetic Catalysis in Dense Holographic Matter"

Fri, Sep 23, 2011, 1:30 pm to 3:00 pm
Abstract: I will discuss the chiral phase transition in a magnetic field at finite temperature and chemical potential within the Sakai-Sugimoto model, a holographic top-down approach to (large-N_c) QCD. For small temperatures the addition of a magnetic field decreases the critical chemical potential for chiral symmetry restoration.

### Princeton University Gravity Group Astrophysics/Cosmology Lunch Special Seminar

Fri, Sep 23, 2011, 12:00 pm to 1:30 pm
Inaugural Math-Physics GR Seminar Speaker: Mihalis Dafermos, University of Cambridge “The mathematical approach to general relativity"
***Lunch will be provided***