Quantum Decoherence of Macroscopic Object Induced by Inner Environments： an Exactly Solvable Model

作     者：ZHENG Li ZHENG Tai-Yu 

作者机构：College of Info Science and Engineering Dalian Institute of Light Industry Dalian 116034 China Institute of Theoretical Physics the Chinese Academy of Sciences Beijing 100080 China The Institute of Theoretical Physics Northeast Normal University Changchun 130022 China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2007年第47卷第2期

页      面：229-234页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：The project supported by National Natural Science Foundation of China under Grant Nos. 10547106  90203018  10474104  and 60433050  and the National Fundamental Research Program of China under Grant Nos. 2001CB309310 and 2005CB724508 L. Zheng thanks sincerely C.P. Sun and P. Zhang for their helpful discussions 

主　　题：quantum decoherence macroscopic object inner environments 

摘      要：We revisit the quantum decoherence problem of the center of mass motion of a macroscopic object, which is modelled as a one-dimensional atom chain. Induced by the coupling of the center of mass （C.M） motion with the inner degrees of freedom, this inner-environment-induced decoherence is reflected by the localization of the C.M wave packet. We show that, the C.M motion is coupled to the inner states only when the chain has interaction with the external potential. This result provides a realistic mechanism for the analysis of the inner-environment-induced localization of a macroscopic object.