Analysis of the reservoir model in thermo-field dynamics

Y. Georgelin and Y. Leblanc

Physica A: Statistical Mechanics and its Applications, 1991, vol. 171, issue 3, 554-574

Abstract: In the light of a new canonical formalism for field theory in thermal non-equilibrium regimes, we reanalyze a completely integrable model, the reservoir model, which describes the interaction of a single quantum mechanical mode with a set of reservoir variables. We find the general solution of the model in which the damping parameter becomes time-dependent. We relate the existence of the solution to a breakdown of a symmetry of the trace operation of statistical mechanics and classify the non-equilibrium regimes according to initial conditions. We discuss the physical meaning of our results.

Date: 1991
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:171:y:1991:i:3:p:554-574

DOI: 10.1016/0378-4371(91)90301-R

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