Reliability of fluctuation-induced transport in a Maxwell-demon-type engine

Details Reliability of fluctuation-induced transport in a Maxwell-demon-type engine Reliability of fluctuation-induced transport in a Maxwell-demon-type engine

2010-03-30

arxiv.org/abs/1003.5949v1

Physics

Condensed Matter

Statistical Mechanics

14 pages, 5 figures

Scientific paper

We study the transport properties of an overdamped Brownian particle which is simultaneously in contact with two thermal baths. The first bath is modeled by an additive thermal noise at temperature $T_A$. The second bath is associated with a multiplicative thermal noise at temperature $T_B$. The analytical expressions for the particle velocity and diffusion constant are derived for this system, and the reliability or coherence of transport is analyzed by means of their ratio in terms of a dimensionless P\'{e}clet number. We find that the transport is not very coherent, though one can get significantly higher currents.

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