Escape rate of an active Brownian particle over a potential barrier
Statistical Mechanics
2012-04-02 v1 Soft Condensed Matter
Abstract
We study the dynamics of an active Brownian particle with a nonlinear friction function located in a spatial cubic potential. For strong but finite damping, the escape rate of the particle over the spatial potential barrier shows a nonmonotonic dependence on the noise intensity. We relate this behavior to the fact that the active particle escapes from a limit cycle rather than from a fixed point and that a certain amount of noise can stabilize the sojourn of the particle on this limit cycle.
Keywords
Cite
@article{arxiv.1203.6814,
title = {Escape rate of an active Brownian particle over a potential barrier},
author = {P. S. Burada and B. Lindner},
journal= {arXiv preprint arXiv:1203.6814},
year = {2012}
}