Critical Scaling Behaviors of Entanglement Spectra  

作　　者：Qi-Cheng Tang Wei Zhu 唐启承;朱伟(School of Science,Westlake University,Hangzhou 3100242;Institute of Natural Sciences,Westlake Institute of Advanced Study,Hangzhou 310024)

机构地区：[1]School of Science,Westlake University,Hangzhou 3100242 [2]Institute of Natural Sciences,Westlake Institute of Advanced Study,Hangzhou 310024

出　　处：《Chinese Physics Letters》2020年第1期1-5,共5页中国物理快报（英文版）

基　　金：the start-up funding from Westlake University;the National Natural Science Foundation of China under Grant No 11974288.

摘　　要：We investigate the evolution of entanglement spectra under a global quantum quench from a short-range correlated state to the quantum critical point.Motivated by the conformal mapping,we find that the dynamical entanglement spectra demonstrate distinct finite-size scaling behaviors from the static case.As a prototypical example,we compute real-time dynamics of the eritanglement spectra of a one-dimensional transverse-field Ising chain.Numerical simulation confirms that the entanglement spectra scale with the subsystem size I as for the dynamical equilibrium state,much faster thanαIn^-1 l for the critical ground state.In particular,as a byproduct,the entanglement spectra at the long time limit faithfully gives universal tower structure of underlying Ising criticality,which shows the emergence of operator-state correspondence in the quantum dynamics.

关 键 词：dynamics. QUANTUM ANGLE 

分 类 号：O413[理学—理论物理]