Paradoxical non-linear response of a Brownian particle
Statistical Mechanics
2009-11-10 v1
Abstract
We consider a Brownian particle in a ``meandering'' periodic potential when the ambient temperature is a periodically or stochastically varying function of time. Though far from equilibrium, the linear response of the particle to an external static force is exactly the same as in the equilibrium case, i.e. for constant temperature. Even more surprising is the non-linear response: the particle slows down and then even starts to move in the direction opposite to the applied force.
Cite
@article{arxiv.cond-mat/0406155,
title = {Paradoxical non-linear response of a Brownian particle},
author = {Ralf Eichhorn and Peter Reimann},
journal= {arXiv preprint arXiv:cond-mat/0406155},
year = {2009}
}
Comments
4 pages, 5 figures