| Effect of rare fluctuations on the thermalization of isolated quantum systems. | |
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MedLine Citation:
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PMID: 21231563 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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We consider the question of thermalization for isolated quantum systems after a sudden parameter change, a so-called quantum quench. In particular, we investigate the prerequisites for thermalization, focusing on the statistical properties of the time-averaged density matrix and of the expectation values of observables in the final eigenstates. We find that eigenstates, which are rare compared to the typical ones sampled by the microcanonical distribution, are responsible for the absence of thermalization of some infinite integrable models and play an important role for some nonintegrable systems of finite size, such as the Bose-Hubbard model. We stress the importance of finite size effects for the thermalization of isolated quantum systems and discuss two scenarios for thermalization. |
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Authors:
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Giulio Biroli; Corinna Kollath; Andreas M Läuchli |
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Publication Detail:
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Type: Journal Article Date: 2010-12-14 |
Journal Detail:
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Title: Physical review letters Volume: 105 ISSN: 1079-7114 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2011-01-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 250401 Citation Subset: - |
Affiliation:
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Institut de Physique Théorique, CEA/DSM/IPhT-CNRS/URA 2306 CEA-Saclay, F-91191 Gif-sur-Yvette, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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