Demon-free quantum Brownian motors

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dc.creatorMachura, L.
dc.creatorKostur, M.
dc.creatorHänggi, P.
dc.creatorTalkner, P.
dc.creatoruczka, J. L
dc.date2004-02-04
dc.date.accessioned2026-07-07T02:56:17Z
dc.date.available2026-07-07T02:56:17Z
dc.descriptionA quantum Smoluchowski equation is put forward that consistently describes thermal quantum states. In particular, it notably does not induce a violation of the second law of thermodynamics. This so modified kinetic equation is applied to study {\it analytically} directed quantum transport at strong friction in arbitrarily shaped ratchet potentials that are driven by nonthermal two-state noise. Depending on the mutual interplay of quantum tunneling and quantum reflection these quantum corrections can induce both, either a sizable enhancement or a suppression of transport. Moreover, the threshold for current reversals becomes markedly shifted due to such quantum fluctuations.
dc.description4 pages 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0402116
dc.identifierhttp://arxiv.org/abs/cond-mat/0402116
dc.identifierPhys. Rev. E 70, 031107 (2004)
dc.identifierdoi:10.1103/PhysRevE.70.031107
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23261
dc.subjectOther Condensed Matter
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleDemon-free quantum Brownian motors
dc.typetext

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