Nonequilibrium fluctuation induced escape from a metastable state
Department of Physics, Katwa College, Katwa, Burdwan 713130, West Bengal, India
2 Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India
3 Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061-0435, USA
Published online: 2 March 2007
Based on a simple microscopic model where the bath is in a non-equilibrium state we study the escape from a metastable state in the over-damped limit. Making use of Fokker-Planck-Smoluchowski description we derive the time dependent escape rate in the non-stationary regime in closed analytical form which brings on to fore a strong non-exponential kinetic of the system mode.
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 02.50.Ey – Stochastic processes
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007