Stochastic resonance between dissipative structures in a bistable noise-sustained dynamics

Details Stochastic resonance between dissipative structures in a bistable noise-sustained dynamics Stochastic resonance between dissipative structures in a bistable noise-sustained dynamics

2003-12-19

arxiv.org/abs/cond-mat/0312521v1

Physics

Condensed Matter

Statistical Mechanics

RevTex, 13 pages, 6 figures, accepted in Physical Review E

Scientific paper

10.1103/PhysRevE.69.021107

We study an extended system that without noise shows a monostable dynamics, but when submitted to an adequate multiplicative noise, an effective bistable dynamics arise. The stochastic resonance between the attractors of the \textit{noise-sustained dynamics} is investigated theoretically in terms of a two-state approximation. The knowledge of the exact nonequilibrium potential allows us to obtain the output signal-to-noise ratio. Its maximum is predicted in the symmetric case for which both attractors have the same nonequilibrium potential value.

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