# Events Archive

## 2011

### Math Phys Seminar: Ivan Corwin (Courant Inst. NYU) 'Macdonald Processes and Some Applications in Probability and Integrable Systems'

Tue, Nov 29, 2011, 4:30 pm to 6:00 pm

Macdonald processes are probability measures on sequences of partitions defined in terms of nonnegative specializations of the Macdonald symmetric functions and two parameters q, t in [0,1). Utilizing the Macdonald difference operators we prove several results about observables these processes, including Fredholm determinant formulas for q-Laplace...

### Informal High Energy Theory Seminar -Hunting De Sitter Holography from the Bottom Up - Matthew Baumgart, Johns Hopkins University

Tue, Nov 29, 2011, 1:30 pm to 3:00 pm

The holographic RG of Anti-De Sitter gives a powerful clue about theunderlying AdS/CFT correspondence.The question is whether similar hints can be found for the heretoforeelusive holographic dual of De Sitter.The framework of stochastic inflation uses a nonperturbative insightin order to tame bad behavior in theperturbation series at late times.

### High Energy Theory Seminar - David Kosower, CEA/Saclay

### Special Condensed Matter Seminar, Ville Lehtinen, "Topological liquid nucleation induced by vortex-vortex interactions in Kitaev’s honeycomb model"

Mon, Nov 28, 2011, 1:15 pm to 2:30 pm

Abstract: We provide a microscopic understanding of the nucleation of topological quantum liquids for interacting non-Abelian anyons by making an explicit connection between the microscopics of the pairwise interactions – typically showing RKKY-type behavior oscillating in sign, but decaying exponentially with distance – and the nature of the...

### Biophysics Seminar Series - Otger Campas, Harvard

Mon, Nov 28, 2011, 11:45 am to 1:00 pm

Otger Campas, Harvard

### Statistical Mechanics Seminar, M. Lewin, "The thermodynamic limit of disordered quantum Coulomb systems"

Wed, Nov 23, 2011, 2:00 pm to 3:30 pm

Abstract: In this talk I will explain how to prove the existence of the thermodynamic limit for a many-body quantum crystal in which the electrons are quantum and the nuclei are classical point particles, with
disordered charges and locations around a lattice. This is a collaboration with Xavier Blanc, based on previous work with Christian Hainzl...

### Math Phys Seminar: Giambattista Giacomin (Université Paris Diderot) "Random natural frequencies, active dynamics and coherence stability in populati

Tue, Nov 22, 2011, 4:30 pm to 6:00 pm

The Kuramoto synchronization model is the reference model for synchronization phenomena in biology (and, to a certain extent, also in other fields). The model is formulated as a dynamical system of interacting plane rotators. Variations of it provide basic models of phenomena beyond synchronization, such as noise induced coherent oscillations.

### Informal High Energy Theory Seminar - Maxime Gabella, Oxford University

Tue, Nov 22, 2011, 1:30 pm to 3:00 pm

### HET Seminar - Pavel Kovtun -Univ. of Victoria - Fluctuations and viscosity

Mon, Nov 21, 2011, 2:30 pm to 3:55 pm

Sound waves with long-distance propagation are both a consequence of
hydrodynamics, and a danger to hydrodynamics' very existence, as they
violate the assumption of local equilibration. In the talk, I will
discuss what the thermally excited sound and shear waves do to
viscosity. In 2+1 dimensions, the shear viscosity and the charge

### Condensed Matter Seminar, Lu Li, "Magnetism of LaAlO3/SrTiO3 Heterostructure Interface"

Mon, Nov 21, 2011, 1:15 pm to 2:45 pm

Abstract: The LaAlO3/SrTiO3 heterostructure is a potential candidate for a high mobility two-dimensional electron system with novel electronic and magnetic properties. Though LaAlO3 and SrTiO3 are both large-gap band insulators, the interface is conductive, and even superconducting below 200 mK.

### Biophysics Seminar Series - Boris Shraiman, KITP/UCSB

Mon, Nov 21, 2011, 11:45 am to 1:00 pm

Boris Shraiman, KITP/UCSB

### Princeton University Gravity Group Astrophysics|Cosmology Lunch

Fri, Nov 18, 2011, 12:00 pm to 1:30 pm

Speaker John Appel, Princeton
“Observing the Multiverse with Cosmic Wakes

Fethi M Ramazanoglu, journal discussion on "Nothing" by A. Brown & A. Dahlen Guilherme Pimentel - journal discussion TBD

http://www.physics.princeton.edu/cosmology/journalclub/

Fethi M Ramazanoglu, journal discussion on "Nothing" by A. Brown & A. Dahlen Guilherme Pimentel - journal discussion TBD

http://www.physics.princeton.edu/cosmology/journalclub/

### Statistical Mechanics Seminar, Rupert Frank, "A microscopic derivation of Ginzburg-Landau theory of superconductivity"

Wed, Nov 16, 2011, 2:00 pm to 3:30 pm

Abstract: We describe the first rigorous derivation of the celebrated
Ginzburg-Landau (GL) theory, starting from the microscopic
Bardeen-Cooper-Schrieffer (BCS) model. Close to the critical temperature, GL arises as an effective theory on the macroscopic scale. The relevant scaling limit is semiclassical in nature, and semiclassical

### Math Phys Seminar: Robert Schrader (FU - Berlin) "QED in Half Space"

Tue, Nov 15, 2011, 4:30 pm to 6:00 pm

A proposal for QED in half space is made. Starting from the well known principle of mirror charges in electrostatics, we formulate boundary conditions for electromagnetic fields and charge carrying currents both in the classical and the quantum context. Free classical and quantum fields are constructed, such that the required boundary conditions...

### HET Seminar - Jim Halverson - Univ. of Penn. - Instantons and Semi-Realistic Gauge Theories in Type II / F-theory and Their Duals

Tue, Nov 15, 2011, 1:00 pm to 2:30 pm

Instantons in string theory can generate superpotential corrections useful for moduli stabilization or the existence of phenomenologically relevant couplings. In this talk, I will consider these issues from three points of view. First, I will present systematic "bottom-up" work on a class of MSSM-like gauge theories with anomalous U(1)'s (from IIa...

### High Energy Theory Seminar - Lara Anderson, University of Pennsylvania

Mon, Nov 14, 2011, 2:30 pm to 4:00 pm

### Biophysics Seminar Series - Lars Hufnagel, EMBL

Mon, Nov 14, 2011, 11:45 am to 1:00 pm

Lars Hufnagel, EMBL

### Physics Colloquium: Cumrun Vafa

Thu, Nov 10, 2011, 4:30 pm to 6:00 pm

“Strings and the Magic of Extra Dimensions

### Statistical Mechanics Seminar, D.Ruelle, "A mechanical model for Fourier's law for heat conduction"

Wed, Nov 9, 2011, 2:00 pm to 3:30 pm

Abstract: Nonequilibrium statistical mechanics close to equilibrium is a physically satisfactory theory centered on the linear response formula of Green-Kubo. This formula results from a formal first order perturbation calculation without rigorous justification.

### Math Phys Seminar: Michael Damron (Princeton Univ.) "A simplified proof of the relation between scaling exponents in first-passage percolation"

Tue, Nov 8, 2011, 4:30 pm to 6:00 pm

In first passage percolation, we place i.i.d. non-negative weights on the nearest-neighbor edges of Z^d and study the induced random metric. A long-standing conjecture gives a relation between two "scaling exponents": one describes the variance of the distance between two points and the other describes the transversal fluctuations of optimizing...