Nonlinear dissipation effect in Brownian relaxation.
In an ensemble of noninteracting 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 under strongly nonequilibrium conditions.
Plyukhin
A V
AV
Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Canada SK S7N 5E2.
Froese
A M
AM