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题名: Quantum thermalization with couplings
作者: Dong, H. ;  Yang, S. ;  Liu, X. F. ;  Sun, C. P.
刊名: PHYSICAL REVIEW A
出版日期: 2007
卷号: 76, 期号:4, 页码:-
关键词: STATISTICAL-MECHANICS
学科分类: Physics
通讯作者: Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
部门归属: [Dong, H; Yang, S; Sun, CP] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; [Liu, XF] Beijing Univ, Dept Math, Beijing 100871, Peoples R China
英文摘要: We present an exactly solvable model to study the role of the system-bath coupling for the generalized canonical thermalization, which reduces almost all the pure states of the "universe" (formed by a system S plus its surrounding heat bath B) to a canonical equilibrium state of S. It is found that, for the overwhelming majority of the "universe" states (they are entangled at least), the diagonal canonical typicality remains robust with respect to finite interactions between S and B. Particularly, a decoherence mechanism is utilized here to account for the vanishing of the off-diagonal elements of the reduced density matrix of S. The nonvanishing off-diagonal elements due to the finite size of the bath and the stronger system-bath interaction might offer more to quantum thermalization.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000250619700218
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5645
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Dong, H.,Yang, S.,Liu, X. F.,et al. Quantum thermalization with couplings[J]. PHYSICAL REVIEW A,2007,76(4):-.
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