Quantum thermalization with couplings

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	Quantum thermalization with couplings
	Dong, H.; Yang, S.; Liu, X. F.; Sun, C. P.; Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
刊名	PHYSICAL REVIEW A
	2007
卷号	76 期号:4 页码:-
关键词	Statistical-mechanics
ISSN号	1050-2947
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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000250619700218
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5645]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Dong, H.,Yang, S.,Liu, X. F.,et al. Quantum thermalization with couplings[J]. PHYSICAL REVIEW A,2007,76(4):-.
APA	Dong, H.,Yang, S.,Liu, X. F.,Sun, C. P.,&Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.(2007).Quantum thermalization with couplings.PHYSICAL REVIEW A,76(4),-.
MLA	Dong, H.,et al."Quantum thermalization with couplings".PHYSICAL REVIEW A 76.4(2007):-.