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Diffusion accompanying noise induced transport in frictional ratchets

Raishma Krishnan·Debasis Dan·A. M. Jayannavar
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Abstract

We study the noise induced transport of an overdamped Brownian particle in frictional ratchet systems in the presence of external Gaussian white noise fluctuations. The analytical expressions for current and diffusion coefficient are derived and the reliability or coherence of transport are discussed by means of their ratio. We show that frictional ratchets exhibit larger coherence as compared to the flashing and rocking ratchets.

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Raishma Krishnan, Debasis Dan, A. M. Jayannavar. 2004-09-11. Diffusion accompanying noise induced transport in frictional ratchets. https://arxiv.org/abs/cond-mat/0409287

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