Stochastic resonance in extended systems: Enhancement due to coupling in a reaction-diffusion model

被引：42

作者：

Castelpoggi, F

Wio, HS

机构：

[1] Centro Atómico Bariloche, CNEA Instituto Balseiro, UNC

来源：

EUROPHYSICS LETTERS | 1997年 / 38卷 / 02期

关键词：

D O I：

10.1209/epl/i1997-00206-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the phenomenon of stochastic resonance in a spatially extended system. The system chosen, a simple version of a reaction-diffusion model, has a known form of the non-equilibrium potential which is exploited to obtain firstly the probability for the decay of the metastable extended states, and then expressions for the correlation function and for the signal-to-noise ratio. We show analytically that this ratio increases with the diffusivity that plays the role of a coupling parameter.

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页码：91 / 95

页数：5

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