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arXiv · 1203.6814

Escape rate of an active Brownian particle over a potential barrier

P. S. Burada·B. Lindner
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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.

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P. S. Burada, B. Lindner. 2012-03-30. Escape rate of an active Brownian particle over a potential barrier. https://doi.org/10.1103/physreve.85.032102

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