Tuesday, July 17, 2012

1207.3700 (A. Smirne et al.)

Role of correlations in the thermalization of quantum systems    [PDF]

A. Smirne, E. -M. Laine, H. -P. Breuer, J. Piilo, B. Vacchini
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.
View original: http://arxiv.org/abs/1207.3700

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