Dynamical detailed balance and local KMS condition for non-equilibrium states

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dc.creatorAccardi, Luigi
dc.creatorImafuku, Kentaro
dc.date2002-09-14
dc.date.accessioned2026-07-07T06:04:57Z
dc.date.available2026-07-07T06:04:57Z
dc.descriptionThe principle of detailed balance is at the basis of equilibrium physics and is equivalent to the Kubo-Martin-Schwinger (KMS) condition (under quite general assumptions). In the present paper we prove that a large class of open quantum systems satisfies a dynamical generalization of the detailed balance condition ({\it dynamical detailed balance}) expressing the fact that all the micro-currents, associated to the Bohr frequencies are constant. The usual (equilibrium) detailed balance condition is characterized by the property that this constant is identically zero. From this we deduce a simple and experimentally measurable relation expressing the microcurrent associated to a transition between two levels $ε_m\toε_n$ as a linear combination of the occupation probabilities of the two levels, with coefficients given by the generalized susceptivities (transport coefficients). Finally, using a master equation characterization of the dynamical detailed balance condition, we show that this condition is equivalent to a "local" generalization of the usual KMS condition.
dc.descriptionREVTex4, 23pages
dc.identifierhttps://arxiv.org/abs/quant-ph/0209088
dc.identifierhttp://arxiv.org/abs/quant-ph/0209088
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/90493
dc.subjectQuantum Physics
dc.titleDynamical detailed balance and local KMS condition for non-equilibrium states
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