Towards quantitative active matter studies
报告题目：Towards quantitative active matter studies
报告人：Hugues Chaté ，法国CEA-SACLAY，北京计算科学研究中心
报告时间：2020年10月12日（星期一）下午15：00
报告地点：线上，腾讯会议，会议ID：222 713 816
报告链接：https://meeting.tencent.com/s/whScNpVR19DG
报告邀请人：施夏清
报告摘要：Active matter is arguably one of the fastest-growing sectors of statistical physics. Its growth has been somewhat anarchic, vibrant and diverse on one hand, uncontrolled and leaving a trail ofhalf-cooked results on the other hand, yielding a landscape of much-varying level of understanding. In many instances, the obtained results are rather qualitative.
In this talk, I will argue that it is time for active matter studies to turn to more quantitative investigations, trying to complete the link from experimental data to field theories. More specifically, I will draw on my own work on active nematics to illustrate (i) the importance of keeping the connection between particle-based models and hydrodynamic theories ; (ii) how data-driven quantitative modeling can be achieved, even on such complex systems as dense bacterial suspensions.
报告人简介：Dr. Hugues Chaté obtained his PhD from Université Pierre & Marie Curie in 1990, under the supervision of Yves Romeau and Paul Manneville. After a short visit at Bell Laboratories in USA, he joined CEA Saclay (French Alternative Energies and Atomic Energy Commission) as a researcher and was promoted to Senior Scientist in 2002. He now also holds the position of Lead Editor of Physical Review Letters, and a chaired professorship at Beijing Computational Science Research Center.
Dr. Chaté's research focuses on the study of out-of-equilibrium phenomena, phase transitions, and pattern formation in complex systems. During his PhD work, he studied spatiotemporal intermittency, linking the transition to turbulence as observed in shear flows to absorbing phase transitions. In the following years, he continued to work on both nonlinear dynamics and nonequilibrium statistical physics, contributing important results on Lyapunov analysis of large chaotic systems, nonequilibrium phase transitions, and the non-perturbative renormalization group. More recently, he shifted his attention to active matter and has made a number of important and original contributions to the subject.