Diffusion accompanying noise induced transport in frictional ratchets
Statistical Mechanics
2007-05-23 v1
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.
Keywords
Cite
@article{arxiv.cond-mat/0409287,
title = {Diffusion accompanying noise induced transport in frictional ratchets},
author = {Raishma Krishnan and Debasis Dan and A. M. Jayannavar},
journal= {arXiv preprint arXiv:cond-mat/0409287},
year = {2007}
}
Comments
6 pages, 6 figures