Dynamics of the Entanglement Spectrum of the Haldane Model under a Sudden Quench  

作　　者：Lin-Han Mo Qiu-Lan Zhang Xin Wan 莫林翰;张秋兰;万歆(Zhejiang Institute of Modern Physics,Zhejiang University,Hangzhou 310027,China;School of Information Science and Engineering,Zhejiang University Ningbo Institute of Technology,Ningho 315100,China;CAS Center for Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]Zhejiang Institute of Modern Physics,Zhejiang University,Hangzhou 310027,China [2]School of Information Science and Engineering,Zhejiang University Ningbo Institute of Technology,Ningho 315100,China [3]CAS Center for Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Physics Letters》2020年第6期5-8,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Grant No.11674282);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB28000000)。

摘　　要：One of the appealing features of topological systems is the presence of robust edge modes.Under a sudden quantum quench,the edge modes survive for a characteristic time that scales with the system size,during which the nontrivial topology continues to manifest in entanglement properties,even though the post-quench Hamiltonian belongs to a trivial phase.We exemplify this in the quench dynamics of a two-dimensional Haldane model with the help of one-particle entanglement spectrum and the probability density of its mid-states.We find that,beyond our knowledge in one-dimensional models,the momentum dependence of the transverse velocity plays a crucial role in the out-of-equilibrium evolution of the entanglement properties.

关 键 词：properties. TRIVIAL nontrivial 

分 类 号：O469[理学—凝聚态物理]