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dc.contributor.authorMarathe, Rahul-
dc.contributor.authorJain, Kavita-
dc.contributor.authorDhar, Abhishek-
dc.date.accessioned2009-05-13T11:16:58Z-
dc.date.available2009-05-13T11:16:58Z-
dc.date.issued2008-11-14-
dc.identifier.citationJournal of Statistical Mechanics: Theory and Experiment, 2008, p11014en
dc.identifier.issn1742-5468 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/3751-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en
dc.description.abstractIn a recent study (Jain et al 2007 Phys. Rev. Lett. 99 190601), a symmetric exclusion process with time-dependent hopping rates was introduced. Using simulations and a perturbation theory, it was shown that if the hopping rates at two neighboring sites of a closed ring vary periodically in time and have a relative phase difference, there is a net DC current which decreases in inverse proportion with the system size. In this work, we simplify and generalize our earlier treatment. We study a model where hopping rates at all sites vary periodically in time, and show that for certain choices of relative phases, a DC current of order unity can be obtained. Our results are obtained using a perturbation theory in the amplitude of the time-dependent part of the hopping rate. We also present results obtained in a sudden approximation that assumes large modulation frequency.en
dc.language.isoenen
dc.publisherIOP Publishing Ltd.en
dc.relation.urihttp://arxiv.org/abs/0809.2468en
dc.relation.urihttp://dx.doi.org/10.1088/1742-5468/2008/11/P11014en
dc.rights2008 IOP Publishing Ltd.en
dc.subjectdriven diffusive systems (theory)en
dc.subjectstochastic particle dynamics (theory)en
dc.titleParticle current in a symmetric exclusion process with time-dependent hopping ratesen
dc.typeArticleen
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