Effective stochastic resonance under noise of heterogeneous amplitude

被引:4
作者
Kawai, Ryosuke [1 ]
Torigoe, Shogo [1 ]
Yoshida, Kazuhiro [2 ]
Awazu, Akinori [1 ]
Nishimori, Hiraku [1 ]
机构
[1] Hiroshima Univ, Dept Math & Life Sci, Higashihiroshima 7398526, Japan
[2] Osaka Prefecture Univ, Dept Math Sci, Sakai, Osaka 5998531, Japan
来源
PHYSICAL REVIEW E | 2010年 / 82卷 / 05期
基金
日本学术振兴会;
关键词
ENHANCEMENT; SYSTEM;
D O I
10.1103/PhysRevE.82.051122
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Stochastic resonance is numerically and analytically studied using a model wherein two coupled particles are exposed to noise of heterogeneous (i.e., particle-dependent) amplitude. In a certain range of coupling constant and under noise of heterogeneous amplitude, a particle is observed to resonate intensively to the external field. In other words, one particle under noise of very small or zero amplitude exhibits intensive resonance with the assistance of a highly fluctuating second particle under noise of large amplitude. This intensive resonance is interpreted as a product of the unique combinatory dynamics between one particle that stochastically fluctuates and another particle that classically resonates to the external field.
引用
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页数:7
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