Stochastic resonance in an asymmetric bistable system driven by coloured correlated multiplicative and additive noise  

作　　者：宁丽娟 徐伟 姚明礼 

机构地区：[1]Department of Applied Mathematics,Northwestern Polytechnical University

出　　处：《Chinese Physics B》2008年第2期486-491,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos 10472091 and 10332030);the Natural Science Foundation of Shaanxi Province (Grant No 2003A03)

摘　　要：This paper investigates the stochastic resonance （SR） phenomenon in an asymmetric system with coupling between multiplicative and additive noise when the coupling between two noise terms is coloured. The approximate expression of signal-to-noise ratio has been obtained by applying the two-state theory and SR exhibits in the bistable system. Moreover, the potential asymmetry r and cross-correlation strength λ can weaken the SR phenomenon, while the cross-correlation time r can strengthen the SR phenomenon.This paper investigates the stochastic resonance （SR） phenomenon in an asymmetric system with coupling between multiplicative and additive noise when the coupling between two noise terms is coloured. The approximate expression of signal-to-noise ratio has been obtained by applying the two-state theory and SR exhibits in the bistable system. Moreover, the potential asymmetry r and cross-correlation strength λ can weaken the SR phenomenon, while the cross-correlation time r can strengthen the SR phenomenon.

关 键 词：stochastic resonance asymmetry bistable system signal-to-noise ratio 

分 类 号：N93[自然科学总论]