Transport and bistable kinetics of a Brownian particle in a nonequilibrium environment

Research paper by Jyotipratim Ray Chaudhuri, Suman Kumar Banik, Sudip Chattopadhyay, Pinaki Chaudhury

Indexed on: 07 Oct '08Published on: 07 Oct '08Published in: Physics - Soft Condensed Matter


A system reservoir model, where the associated reservoir is modulated by an external colored random force, is proposed to study the transport of an overdamped Brownian particle in a periodic potential. We then derive the analytical expression for the average velocity, mobility, and diffusion rate. The bistable kinetics and escape rate from a metastable state in the overdamped region are studied consequently. By numerical simulation we then demonstrate that our analytical escape rate is in good agreement with that of numerical result.