主讲人：张海青 副教授（北京航空航天大学）

题目：Holographic topological defects in 1D system

时间：2022年03月30日下午16：00

会议ID：（腾讯会议）272-583-431

联系人：王永强

报告摘要：

In this talk I will briefly talk about our recent work on the holographic Kibble-Zurek mechanism to generate the topological defects in a 1D system. In this case the topological defects are winding numbers surrounding the periodic 1D loop. During the dynamical course of the generating the topological defects, the Little-Parks effect can be clearly seen in the final equilibrium state. The lowest energy configurations of the system are found to be consistent with the counting statistics of the frequently appeared states from the quenching dynamics. Besides, I will also discuss the different boundary condition (Dirichlet and Neumann boundary conditions of the gauge fields) effects to the topological defects. In particular, the two-point correlation functions in these two cases are totally different.

References: arXiv: 2111.05568, 2111.15230

个人简介：

张海青，北京航空航天大学空间科学系副教授，博士生导师。2012年博士毕业于中科院理论物理研究所。博士论文是关于引力全息原理在凝聚态，尤其是超导中的应用。2012-2016年，先后在葡萄牙里斯本大学与荷兰乌特勒支大学做博士后，并于2016年底回北京航空航天大学任职。近年来，研究领域主要集中在引力全息原理在非平衡态中的应用，例如涡旋在全息超导中的形成机制以及全息纠缠熵在非平衡中的演化。