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Dong, H.; Yang, S.; Liu, X. F.; Sun, C. P.; Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Quantum thermalization with couplings
Source PublicationPHYSICAL REVIEW A
KeywordStatistical-mechanics
AbstractWe 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.
2007
ISSN1050-2947
Volume76Issue:4Pages:-
Subject AreaPhysics
Indexed BySCI
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Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5645
CollectionSCI期刊论文
Corresponding AuthorSun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Recommended Citation
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):-.
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