We investigate the equilibration and thermalization properties of quantum systems interacting with a finite dimensional environment. By exploiting the concept of time averaged states, we introduce a completely positive map which allows to describe in a quantitative way the dependence of the equilibrium state on the initial condition. Our results show that the thermalization of quantum systems is favored if the dynamics induces small system-environment correlations, as well as small changes in the environment, as measured by the trace distance.
Role of correlations in the thermalization of quantum systems / A. Smirne, E. M. Laine, H. P. Breuer, J. Piilo, B. Vacchini. - In: NEW JOURNAL OF PHYSICS. - ISSN 1367-2630. - 14(2012), pp. 113034.113034.1-113034.113034.17.
Role of correlations in the thermalization of quantum systems
A. SmirnePrimo
;B. VacchiniUltimo
2012
Abstract
We investigate the equilibration and thermalization properties of quantum systems interacting with a finite dimensional environment. By exploiting the concept of time averaged states, we introduce a completely positive map which allows to describe in a quantitative way the dependence of the equilibrium state on the initial condition. Our results show that the thermalization of quantum systems is favored if the dynamics induces small system-environment correlations, as well as small changes in the environment, as measured by the trace distance.File | Dimensione | Formato | |
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