Overdamped Deterministic Ratchets Driven By Multifrequency Forces

Details Overdamped Deterministic Ratchets Driven By Multifrequency Forces Overdamped Deterministic Ratchets Driven By Multifrequency Forces

2006-03-06

arxiv.org/abs/cond-mat/0603128v1

Acta Physica Polonica B 37, 1467 (2006)

Physics

Condensed Matter

Statistical Mechanics

12 pages, 6 figures

Scientific paper

We investigate a dissipative, deterministic ratchet model in the overdamped regime driven by a {\it rectangular force}. Extensive numerical calculations are presented in a diagram depicting the drift velocity as a function of a wide range of the driving parameter values. We also present some theoretical considerations which explain some features of the mentioned diagram. In particular, we proof the existence of regions in the driving parameter space with bounded particle motion possessing zero current. Moreover, we present an explicit analytical expression for the drift velocity in the adiabatic limit.

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