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

B. VON HAEFTEN; G. IZUS; S. MANGIONI; A. D. SANCHEZ; H.S. WIO

PHYSICAL REVIEW E - STATISTICAL PHYSICS, PLASMAS, FLUIDS AND RELATED INTERDISCIPLINARY TOPICS

American Physical Society

Año: 2004 vol. 69 p. 211071 - 211075

1063-651X

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 noise-sustained dynamics is investigated theoretically in terms of a two-state approximation. The knowledge of the exact nonequilibrium potencial allows as to obtain the output signal-to-noise ratio. Its maximum is predicted in the symmetric case for which both attractors have the same nonequilibrium potencial value.