Effective Stochastic Resonance under Heterogeneous Amplitude of Noise

Details Effective Stochastic Resonance under Heterogeneous Amplitude of Noise Effective Stochastic Resonance under Heterogeneous Amplitude of Noise

2009-07-23

arxiv.org/abs/0907.3968v4

Physics

Condensed Matter

Statistical Mechanics

9 pages, 6 figures, submitted to Physics Letters E

Scientific paper

Effective stochastic resonance (SR) is numerically and analytically studied using a model with coupled two particles exposed to heterogeneous, i.e., particles dependent, amplitude of noise. Compared to previous SR models of single particle and to those of coupled two particles exposed to equivalent amplitude of noise, the present model exhibits a more intensive resonance of, at least, one particle exposed to the non-larger amplitude of noise with the assistance of another particle. In a certain range of conditions, this effective resonance of one particle overwhelms the poor resonance of the other particle, meaning that heterogeneous amplitude of noise leads the system, not only locally but also in the average of the whole, to the effective SR.

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