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arXiv · 1404.4719

Heat due to system-reservoir correlations in thermal equilibrium

Joachim Ankerhold·Jukka P. Pekola
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Abstract

The heat flow between a quantum system and its reservoir is analyzed when initially both are in a separable thermal state and asymptotically approach a correlated equilibrium. General findings are illustrated for specific systems and various classes of non-Markovian reservoirs. System-bath correlations are shown to be substantial at low temperatures even in the weak coupling regime. As a consequence, predictions of work and heat for actual experiments obtained within conventional perturbative approaches may often be questionable. Correlations induce characteristic imprints in heat capacities which opens a proposal to measure them in solid state devices.

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Joachim Ankerhold, Jukka P. Pekola. 2014-04-18. Heat due to system-reservoir correlations in thermal equilibrium. https://doi.org/10.1103/physrevb.90.075421

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