Unidirectional hopping transport of interacting particles on a finite chain

Details Unidirectional hopping transport of interacting particles on a finite chain Unidirectional hopping transport of interacting particles on a finite chain

2010-05-05

arxiv.org/abs/1005.0864v1

Physics

Condensed Matter

Statistical Mechanics

33 pages, 8 figures

Scientific paper

Particle transport through an open, discrete 1-D channel against a mechanical or chemical bias is analyzed within a master equation approach. The channel, externally driven by time dependent site energies, allows multiple occupation due to the coupling to reservoirs. Performance criteria and optimization of active transport in a two-site channel are discussed as a function of reservoir chemical potentials, the load potential, interparticle interaction strength, driving mode and driving period. Our results, derived from exact rate equations, are used in addition to test a previously developed time-dependent density functional theory, suggesting a wider applicability of that method in investigations of many particle systems far from equilibrium.

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