# Events Archive

Giovanni Gallavotti , Title: Nonequilibrium: Thermostats, BBGKY Hierarchy, Fourier's Equation
Wed, Dec 8, 2010, 2:00 pm6:00 pm
Abstract: Review of rigorous results on thermostats. Families of exact formal solutions of the BBGKY hierarchy for hard sphere systems with free boundary conditions at collisions and Fourier equation emergence, to first order in the temperature difference, after boundary conditions are imposed. Formal means that the solutions are given by…
Peter Kleban, University of Maine
Wed, Dec 1, 2010, 2:00 pm6:00 pm
Title“Hidden Symmetries at the Percolation Point in Two Dimensions

Michael Aizenman, Princeton University
Wed, Nov 24, 2010, 2:00 pm6:00 pm
Title: "Rounding of 1st Order Quantum Phase Transitions in Low- Dimensional Systems with Quenched Disorder " Abstract: The addition of quenched disorder has a rounding effect on 1st order phase trans ition in systems of sufficiently low dimension (d=2, and up to ï¿½ 4 in case of co ntinuous symmetry). The talk will focus on the recent…
Jakob Yngvason
Wed, Nov 17, 2010, 2:00 pm6:00 pm
Title: Critical velocites in rotating Bose gases Abstract: Some of the remarkable phenomena that emerge when a trapped, ultracold Bose gas is set in rapid rotational motion will be reviewed. In anharmonic traps, where the rotational velocity can in principle be arbitrarily large, one can distinguish three critical velocities at which the…
Birgit Kauffmann
Wed, Nov 10, 2010, 2:00 pm6:00 pm
Title: Bethe-Ansatz for the two species totally asymmetric diffusion Model Abstract: We study the two species asymmetric diffusion model that describes two species and vacancies diffusing asymmetrically on a one-dimensional lattice. Our method is the algebraic Bethe Ansatz. We will explain this technique which we use to find the finite-size…
David Ruelle, IHES, France
Wed, Oct 27, 2010, 2:00 pmFri, Oct 8, 2010, 6:00 pm
Title: Characterization of Lee-Yang polynomials Abstract: I shall give a characterization of the multi-affine polynomials in n variables that occur in the proof of the Lee-Yang Circle Theorem. In particular, it will be seen that the spin interactions for which the Circle Theorem holds at all temperatures must be the ferromagnetic pair…
David Ruelle, IHES, France
Wed, Oct 27, 2010, 2:00 pm6:00 pm
Title: Characterization of Lee-Yang polynomials AAbstract: I shall give a characterization of the multi-affine polynomials in n variables that occur in the proof of the Lee-Yang Circle Theorem. In particular, it will be seen that the spin interactions for which the Circle Theorem holds at all temperatures must be the ferromagnetic pair…
Stefano Olla, Universite Paris-Dauphine
Wed, Oct 20, 2010, 2:00 pm6:00 pm
Title: From microscopic hamiltonian dynamics to heat equation Abstract: One of the main problems in non-equilibrium statistical mechanics is to derive, by space-time rescaling, macroscopic irreversible diffusive evolution for the co nserved quantities of an (large) hamiltonian system. I will describe the mathematical setup of the problem,…
Joel Liebowitz -- Rutgers University
Wed, Oct 13, 2010, 2:00 pm6:00 pm
Title: "Microscopic Models of Macroscopic Transport: A Selective Overview" Abstract: I will describe various attempts to derive, heuristically or rigorously, diffusive behavior of energy (particle) transport, i.e. Fourier's law (Fick's law) from classical microscopic models (mostly deterministic). Computer simulations showing presence or…
Thierry Bodineau
Wed, Oct 6, 2010, 2:00 pm6:00 pm

Eric Carlen
Wed, Sep 29, 2010, 2:00 pm6:00 pm