Time dependent current in a nonstationary environment: a microscopic approach

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dc.contributor.authorBhattacharya, S.en
dc.contributor.authorBanik, S. K.en
dc.contributor.authorChattopadhyay, S.en
dc.contributor.authorChaudhuri, J. R.en
dc.contributor.departmentBiological Sciencesen
dc.date.accessed2014-03-20en
dc.date.accessioned2014-04-09T18:12:28Zen
dc.date.available2014-04-09T18:12:28Zen
dc.date.issued2008-06en
dc.description.abstractBased on a microscopic system reservoir model, where the associated bath is not in thermal equilibrium, we simulate the nonstationary Langevin dynamics and obtain the generalized nonstationary fluctuation dissipation relation (FDR) which asymptotically reduces to the traditional form. Our Langevin dynamics incorporates non-Markovian process also, the origin of which lies in the decaying term of the nonstationary FDR. We then follow the stochastic dynamics of the Langevin particle based on the Fokker-Planck-Smoluchowski description in ratchet potential to obtain the steady and time dependent current in an analytic form. We also examine the influence of initial excitation and subsequent relaxation of bath modes on the transport of the Langevin particle to show that the nonequilibrium nature of the bath leads to both strong nonexponential dynamics as well as nonstationary current. (c) 2008 American Institute of Physics.en
dc.identifier.citationBhattacharya, S.; Banik, S. K.; Chattopadhyay, S.; Chaudhuri, J. R., "time dependent current in a nonstationary environment: a microscopic approach," J. Math. Phys. 49, 063302 (2008); http://dx.doi.org/10.1063/1.2942416en
dc.identifier.doihttps://doi.org/10.1063/1.2942416en
dc.identifier.issn0022-2488en
dc.identifier.urihttp://hdl.handle.net/10919/47093en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/jmp/49/6/10.1063/1.2942416en
dc.language.isoen_USen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectfluctuation-induced transporten
dc.subjectbrownian motorsen
dc.subjectthermal ratchetsen
dc.subjectcurrent reversalen
dc.subjectmolecular motoren
dc.subjectdrivenen
dc.subjectkineticsen
dc.subjectnoiseen
dc.titleTime dependent current in a nonstationary environment: a microscopic approachen
dc.title.serialJournal of Mathematical Physicsen
dc.typeArticle - Refereeden

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