Nonstationary Transport by Internal White Noise and "Localization" in Ratchets

Details Nonstationary Transport by Internal White Noise and "Localization" in Ratchets Nonstationary Transport by Internal White Noise and "Localization" in Ratchets

1996-09-25

arxiv.org/abs/cond-mat/9609246v1

Physics

Condensed Matter

submitted to Phys.Rev.Lett., RevTEx, 4 pages, 3 figures (ps)

Scientific paper

We revealed a right-left asymmetry of the inter-well mean first passage times for the Brownian particles in a ratchet potential under internal white noise. We showed analytically and numerically that this asymmetry gives rise to the following phenomena: (i) nonstationary transport; (ii) localization or ultraslow (Sinai) diffusion for ratchets with a disorder in the asymmetry parameter of the potential; (iii) equilibrium "drift of labels" in circular ratchets.

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