Gaussian noise and time-reversal symmetry in non-equilibrium Langevin models
Abstract
Description
We show that in driven systems the Gaussian nature of the fluctuating force and time-reversibility are equivalent properties. This result together with the potential condition of the external force drastically restricts the form of the probability distribution function, which can be shown to satisfy time-independent relations. We have corroborated this feature by explicitly analyzing a model for the stretching of a polymer and a model for a suspension of non-interacting Brownian particles in steady flow.
6 pages, submitted to PRE
6 pages, submitted to PRE