Stochastic pump of interacting particles

Chaudhuri, Debasish ; Dhar, Abhishek (2011) Stochastic pump of interacting particles EPL (Europhysics Letters), 94 (3). p. 30006. ISSN 0295-5075

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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.

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ID Code:94409
Deposited On:15 Nov 2012 05:16
Last Modified:15 Nov 2012 05:16

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