Steady-state relation of a two-level system strongly coupled to a many-body quantum chaotic environment  

作　　者：Hua Yan Jiaozi Wang Wen-ge Wang 

机构地区：[1]Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China [2]CAS Key Laboratory of Microscale Magnetic Resonance,University of Science and Technology of China,Hefei 230026,China [3]Department of Physics,University of Osnabrück,D-49076 Osnabrück,Germany

出　　处：《Communications in Theoretical Physics》2023年第2期56-59,共4页理论物理通讯（英文版）

基　　金：the Natural Science Foundation of China under Grant Nos.11275179,11535011 and 11775210;the Deutsche Forschungsgemeinschaft(DFG)within the Research Unit FOR 2692 under Grant No.397107022(GE 1657/3-2)

摘　　要：We study the long-time average of the reduced density matrix(RDM)of a two-level system as the central system,which is locally coupled to a many-body quantum chaotic system as the environment,under an overall Schr?dinger evolution.A phenomenological relation among elements of the RDM is proposed for a dissipative interaction in the strong coupling regime and is tested numerically with the environment as a defect Ising chain,as well as a mixed-field Ising chain.

关 键 词：steady-state relations eigenstate thermalization hypothesis quantum chaos two-level system 

分 类 号：O413[理学—理论物理]