30+ years of the Vicsek model

报告人：Hugues Chate 教授 法国CEA(法国原子能委员会）

报告时间：6月18日 下午14：30

报告地点：物理楼101

报告邀请人：段煜

报告摘要：
The introduction of a minimal model for collective motion by Tamas Vicsek and collaborators, together with the analysis of its continuous theory by John Toner and Yuhai Tu mark the birth year of active matter physics in 1995. Since then, a lot has happened, but the issues at stake around what is now known as the Vicsek model remain vividly debated in the ever-growing active matter community.

I will give a personal account of this story and present our current knowledge of the Vicsek model, including some recent and unpublished results. I will discuss in particular the scaling of fluctuations in homogeneous polar flocks, their fragility and metastability, and present an important update of the basic phase diagram of the model.

报告人简介：

Hugues Chaté is a Research Director at CEA-Saclay, France, and a Distinguished Professor at the Institute of Physics of the Chinese Academy of Sciences. Hugues was until recently the Lead Editor of Physical Review Letters, and is now working for all Physical Review journals as their Lead Editorial Strategist for China and East Asia.

HC obtained is PhD in 1989 from Université Pierre & Marie Curie in Paris. After a short postdoctoral stay at Bell Laboratories, he joined the condensed matter physics department in Saclay. He was the leader of the Advanced Study Group “Statistical Physics of Collective Motion” at the Max Planck Institute for the Physics of Complex Systems in Dresden, Germany. In 2016, he took a Chair Professor position at the Beijing Computational Science Research Center.

HC’s research covers a wide range of topics ranging from nonlinear dynamics to statistical physics and critical phenomena. He has played a seminal role in the development of the field of active matter, with key papers published on minimal models and their theoretical understanding as well as works in collaborations with leading experimentalists working on animal collective behavior, bacteria colonies, and in vitro mixtures of biofilaments and motor proteins.

A Fellow of the APS, Hugues has written over 190 scientific papers, with about a third published in Physical Review Letters, which have now been cited about 13000 times for an h-index of 65, according to Web of Science.