Heat due to system-reservoir correlations in thermal equilibrium

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2014-08-22

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en

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6
1-6

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PHYSICAL REVIEW B, Volume 90, issue 7

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 relevant for solid state realizations. 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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Ankerhold , J & Pekola , J P 2014 , ' Heat due to system-reservoir correlations in thermal equilibrium ' , Physical Review B , vol. 90 , no. 7 , 075421 , pp. 1-6 . https://doi.org/10.1103/PhysRevB.90.075421