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arXiv · 0705.3463

Transient rectification of Brownian diffusion with asymmetric initial distribution

A. V. Plyukhin·A. M. Froese
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Abstract

In an ensemble of non-interacting Brownian particles, a finite systematic average velocity may temporarily develop, even if it is zero initially. The effect originates from a small nonlinear correction to the dissipative force, causing the equation for the first moment of velocity to couple to moments of higher order. The effect may be relevant when a complex system dissociates in a viscous medium with conservation of momentum.

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A. V. Plyukhin, A. M. Froese. 2007-05-25. Transient rectification of Brownian diffusion with asymmetric initial distribution. https://doi.org/10.1103/physreve.76.031121

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