Tel-Aviv University
School of Mathematical Sciences

Department Colloquium

Monday, June 6, 2011

Schreiber 006, 12:15

Eyal Lubetzky

Microsoft Research, Redmond, USA

The static and stochastic Ising models

Abstract: The Ising model, one of the most studied models in mathematical physics, was introduced in 1925 to model ferromagnetism. In the classical 2D setting, the model assigns plus/minus spins to the sites of the square grid according to a given probability distribution, which is a function of the number of neighboring sites whose spins agree, as well as the temperature. Over the last three decades, significant effort has been dedicated to the analysis of stochastic dynamical systems that both model the evolution of the Ising model and provide efficient methods for sampling from it. In this talk I will survey the rich interplay between the behaviors of the static and the dynamical models as they both undergo a phase transition at the critical temperature. In particular I will discuss a fundamental problem on the dynamical model introduced by Glauber in 1963, which we recently settled in joint work with Allan Sly.

Coffee will be served at 12:00 before the lecture
at Schreiber building 006