Microcanonical quantum fluctuation theorems

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dc.creatorTalkner, Peter
dc.creatorHanggi, Peter
dc.creatorMorillo, Manuel
dc.date2007-07-16
dc.date2008-04-14
dc.date.accessioned2026-07-07T09:49:28Z
dc.date.available2026-07-07T09:49:28Z
dc.descriptionPreviously derived expressions for the characteristic function of work performed on a quantum system by a classical external force are generalized to arbitrary initial states of the considered system and to Hamiltonians with degenerate spectra. In the particular case of microcanonical initial states explicit expressions for the characteristic function and the corresponding probability density of work are formulated. Their classical limit as well as their relations to the respective canonical expressions are discussed. A fluctuation theorem is derived that expresses the ratio of probabilities of work for a process and its time reversal to the ratio of densities of states of the microcanonical equilibrium systems with corresponding initial and final Hamiltonians.From this Crooks-type fluctuation theorem a relation between entropies of different systems can be derived which does not involve the time reversed process. This entropy-from-work theorem provides an experimentally accessible way to measure entropies.
dc.descriptionrevised and extended version
dc.identifierhttps://arxiv.org/abs/0707.2307
dc.identifierhttp://arxiv.org/abs/0707.2307
dc.identifierPhys. Rev. E 77, 051131 (2008)
dc.identifierdoi:10.1103/PhysRevE.77.051131
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/164599
dc.subjectStatistical Mechanics
dc.titleMicrocanonical quantum fluctuation theorems
dc.typetext

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