On the amplification of diffusion on piecewise linear potentails by direct current

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The diffusive motion of overdamped Brownian particles in tilted piecewise linear pontentials is considered. It is shown that the enhancement of diffusion coefficient by an external static force is quite sensitive to the symmetry of periodic potential. Another new effect found is that the factor of randomness as a function of the tilting force exibits a plateau-like behaviour in the region of low temperatures.
9 pages, 5 figures; some changes introduced; submitted to Phys. Lett. A

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Soft Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/19846

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0208532
 http://arxiv.org/abs/cond-mat/0208532

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arXiv