Heat due to system-reservoir correlations in thermal equilibrium
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.Peer reviewe
114 Physical sciences, 221 Nanotechnology, 214 Mechanical engineering, 218 Environmental engineering, 114 Physical sciences, 221 Nanotechnology, 214 Mechanical engineering, 218 Environmental engineering
Publisher: 'American Physical Society (APS)'
DOI identifier: 10.1103/PhysRevB.90.075421
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