Stochastic resonance between noise sustained structures structures

B. VON HAEFTEN; G. IZÚS; S. MANGIONI; A. D. SÁNCHEZ; HORACIO WIO,

Maspalomas, Gran Canaria, España

Simposio; SPIE IInd. International Symposium on Fluctuations and Noise; 2004

International Society for Optical Engineering

We study an extended system that without nise shows a spatially homogeneous state, but when submitted to an adequate multiplicative noise, some "noise-induced patterns" arise. The stochastic resonance between these structures is investigated theoretically, and the knowledge of the exact nonequilibrium potential allows us to obtain the output signal-to-nise ratio. In agreement with previous studies, its masimum is predicted in the symmetric case for wich both stable attractors have the same nonequilibrium potential value.