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Title: Stochastic pump of interacting particles
Authors: Chaudhuri, Debasish
Dhar, Abhishek
Keywords: Nonequilibrium
Irreversible thermodynamics
Fluctuation phenomena
Random processes
Brownian motion
Transport processes
Issue Date: May-2011
Publisher: IOP Publishing Ltd.
Citation: Europhysics Letters, 2011, Vol.94, p30006
Abstract: We consider the overdamped motion of Brownian particles, interacting via particle exclusion, in an external potential that varies with time and space. We show that periodic potentials that maintain specific position-dependent phase relations generate time-averaged directed current of particles. We obtain analytic results for a lattice version of the model using a recently developed perturbative approach. Many interesting features like particle-hole symmetry, current reversal with changing density, and system size dependence of current are obtained. We propose possible experiments to test our predictions.
Description: Restricted Access. An open-access version is available at (one of the alternative locations)
ISSN: 0295-5075
1286-4854 (Online)
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Copyright: 2011 EPL Association
Appears in Collections:Research Papers (TP)

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