题目：Quantum Many-Body Localization in Atomic Systems
报告人：李晓鹏博士
地点： 教十二-201
时间：4月8日，周五，10:00-11:00
 
Abstract:
Ultracold atomic systems have witnessed rapid developments in the last decade in many aspects, and has now reached a new era where quantum correlations and many-body complexity emerge in unprecedented controllable fashion. These developments stimulate unique angles to study quantum many-body physics especially in non-equilibrium aspects. Specifically, I will discuss quantum many-body localization, a dynamical quantum phase transition at infinite temperature, in optical lattices. I will describe thermalization in an isolated quantum system in the sense of eigenstate thermalization hypothesis, and its breakdown in the presence of strong disorder. I will present our work on nonergodic metallic phase that arises from coexisting localized and delocalized degrees of freedom in one dimensional incommensurate lattices. The conceptual novelty of this nonergodic metallic phase lies in that it is extended in real space but "localized" in the high-dimensional many-body Hilbert space. Numerical evidence and theoretical arguments for this novel phase will be presented. 

个人简介：
EDUCATION ：
Ph.D. in Physics, University of Pittsburgh, Aug 2013 Advisor: W. Vincent Liu Thesis: “Novel Phases and Field Theoretical Methods in Quantum Gases”
B.S., Physics, University of Science and Technology of China, July 2008 Advisor: G.-P. Guo
RESEARCHAPPOINTMENTS：
 2013-present Postdoctoral Fellow, Joint Quantum Institute and Condensed Matter Theory Center, University of Maryland Supervisor: Prof. S. Das Sarma
Spring 2013 KITP Graduate Fellow, University of California, Santa Barbara Supervisor: Prof. Leon Balents
 2008-2013 Graduate Research Assistant (Ph.D.), University of Pittsburgh Supervisor: Prof. W. Vincent Liu

欢迎老师和同学参加！