时间: 2018年12月26日下午15:00 -16:00
地点: 教十二楼201室
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Dynamicsof entanglement in random unitary circuit
Tian-ciZhou （周天赐）
Kavli Institute for Theoretical Physics
University of California at Santa Barbara
Abstract
We systematically study the dynamics ofquantum entanglement in a random unitary circuit, which is a minimal model ofchaotic systems with local interactions. The problem maps to the statisticalmechanics of interacting domain walls, where entanglement is the free energy.We find that the linear growth of R/'enyi entropies in a global quench is determinedby the line tension of the domain wall, and their fluctuation obeys theuniversal Kadar-Parisi-Zhang scaling due the replica interaction. This pictureallows us to understand the behaviors of entanglement in systems at thestrongly chaotic limit.
个人简介
Dr. Zhou graduated in Department ofPhysics, Zhejiang University in June, 2012, and received his Ph D fromUniversity of Illinois at Urbana-Champaign in Aug.,2018. Dr. Zhou is currentlya postdoctoral researcher at KITP working on non-equilibrium dynamics,including quantum quench, entanglement, and recently quantum chaos, etc.
