Distribution of escape times for a deterministically driven bistable system
In this paper, we analyze the sequence of escape times for a particle in a symmetric double-well potential coupled to a chain of monodimensional oscillators and we find that, in some range of energies, the probability of escape exhibits the multimodal form that is characteristic of bistable systems driven by a periodic signal embedded in noise. We identify two different modes contributing to the overall hopping dynamics of the particle, each one having a definite dependence on the energy of the chain. Those findings suggest a model for internal fluctuations that could be useful in the study of some problems of interest in physics and biology.
Casado
JM
Area de Fisica Teorica, Universidad de Sevilla, Apartado Correos 1065, 41080 Sevilla, Spain.
Gomez-Ordonez
J