A new mechanism of hypersensitive transport in tilted sharp ratchets induced by noise flatness

Details A new mechanism of hypersensitive transport in tilted sharp ratchets induced by noise flatness A new mechanism of hypersensitive transport in tilted sharp ratchets induced by noise flatness

2003-03-24

arxiv.org/abs/cond-mat/0303511v2

Physics

Condensed Matter

Statistical Mechanics

5 pages, 3 figures, some changes introduced, submitted to Phys.Rev.E

Scientific paper

The noise-flatness-induced hypersensitive transport of overdamped Brownian particles in a tilted ratchet system driven by multiplicative nonequilibrium three-level Markovian noise and additive white noise is considered. At low temperatures the enhancement of current is very sensitive to the applied small static tilting force. It is established that the enhancement of mobility depends non-monotonically on the parameters (flatness, correlation time) of multiplicative noise. The optimal values of noise parameters maximizing the mobility are found.

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