We prove rigorously and demonstrate in simulations that. for a potential system staying initially at the bottom of a well, the escape flux over the barrier grows on times of the order of a period of eigenoscillation in a stepwise manner, provided that friction is: small or moderate. If the initial state is not at the bottom of the well, then, typically, some of the steps transform into oscillations. The stepwise/oscillatory evolution at short times appears to be a generic feature of a noise-induced flux.
Autori interni: | |
Autori: | Soskin SM; Sheka VI; Linnik TL; Mannella R |
Titolo: | Short time scales in the Kramers problem: A stepwise growth of the escape flux |
Anno del prodotto: | 2001 |
Digital Object Identifier (DOI): | 10.1103/PhysRevLett.86.1665 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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