Speaker: Jian Ding, University of Pennsylvania

Date: Apr.23, 2021

Time: 9:00-10:30a.m.

Location: Wemeet ID：267 132 556 Password：123456

Abstract:

Random field Ising model is a canonical example to study the effect of disorder on long range order. In 70's, Imry-Ma predicted that in the presence of weak disorder, the long-range order persists at low temperatures in three dimensions and above but disappears in two dimensions. In this talk, I will review mathematical development surrounding this prediction, and I will focus on recent progress on exponential decay and on correlation length in two dimensions. The talk is based on a joint work with Mateo Wirth and a joint work with Jiaming Xia.

Bio:

Jian Ding is an associate professor in the statistics department at the University of Pennsylvania. His research area is probability theory with a focus on interactions with statistical physics and theory of computer science. In particular, his recent research topics include random constraint satisfaction problems, random planar geometry, Anderson localization, and disordered spin models. Ding obtained his PhD from UC Berkeley in 2011. He was a Szegö Assistant Professor at Stanford in 2011-2012, and also a MSRI postdoc fellow in Spring 2012. Jian was a faculty member in the statistics department at University of Chicago in 2012-2017 before joining the University of Pennsylvania.

For more information, please visit:

https://www.view.sdu.edu.cn/info/1020/149494.htm