Relaxation of isolated quantum systems beyond chaos
In classical statistical mechanics there is a clear correlation between relaxation to equilibrium and chaos. In contrast, for isolated quantum systems this relation is - to say the least - fuzzy. In this work we try to unveil the intricate relation between the relaxation process and the transition f...
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| Autores principales: | , , |
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2015
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15393755_v91_n1_p_GarciaMata http://hdl.handle.net/20.500.12110/paper_15393755_v91_n1_p_GarciaMata |
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| Sumario: | In classical statistical mechanics there is a clear correlation between relaxation to equilibrium and chaos. In contrast, for isolated quantum systems this relation is - to say the least - fuzzy. In this work we try to unveil the intricate relation between the relaxation process and the transition from integrability to chaos. We study the approach to equilibrium in two different many-body quantum systems that can be parametrically tuned from regular to chaotic. We show that a universal relation between relaxation and delocalization of the initial state in the perturbed basis can be established regardless of the chaotic nature of system. © 2015 American Physical Society. |
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