Relaxation of isolated quantum systems beyond chaos.

García-Mata, Ignacio; Roncaglia, Augusto J; Wisniacki, Diego A

García-Mata, Ignacio; Roncaglia, Augusto J; Wisniacki, Diego A.

Afiliação

García-Mata I; Instituto de Investigaciones Físicas de Mar del Plata (IFIMAR, CONICET), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina and Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Argentina.
Roncaglia AJ; Departamento de Física "J. J. Giambiagi" and IFIBA, FCEyN, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina.
Wisniacki DA; Departamento de Física "J. J. Giambiagi" and IFIBA, FCEyN, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina.

Phys Rev E Stat Nonlin Soft Matter Phys ; 91(1): 010902, 2015 Jan.

Article em En | MEDLINE | ID: mdl-25679559

RESUMO

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.

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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev E Stat Nonlin Soft Matter Phys Assunto da revista: BIOFISICA / FISIOLOGIA Ano de publicação: 2015 Tipo de documento: Article País de afiliação: Argentina País de publicação: Estados Unidos

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