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Heat due to system-reservoir correlations in thermal equilibrium

By Joachim Ankerhold and J.P. Pekola

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.Peer reviewe

Topics: 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)'
Year: 2014
DOI identifier: 10.1103/PhysRevB.90.075421
OAI identifier: oai:aaltodoc.aalto.fi:123456789/31130
Provided by: Aaltodoc
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