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arXiv · cond-mat/0211067

Vortex ratchet

A. Perez-Madrid·T. Alarcon·J. M. Rubi
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Abstract

We present a new class of thermal ratchets operating under the action of a symmetry breaking non-Hermitian perturbation which rectifies thermal fluctuations, and driven by a unbiased periodic force. The peculiar non-Hermitian dynamics which follows causes energy transduction from the force to the system in such a way that an average `uphill' particle current is induced. We discuss physical realizations in assemblies of orientable particles, in itinerant oscillator models, and in problems of diffusion in disordered media.

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A. Perez-Madrid, T. Alarcon, J. M. Rubi. 2002-11-04. Vortex ratchet. https://doi.org/10.1016/s0378-4371(03)00183-3

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