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From Autonomous Coherence Resonance to Periodically Driven Stochastic Resonance |
| CAO Zhou-Jian1;LI Peng-Fei1;HU Gang 1,2,3 |
| 1Department of Physics, Beijing Normal University, Beijing 1008752Chinese Center for Advanced Science and Technology (World Laboratory), Beijing 1000803Beijing-Hong Kong-Singapore Joint Center of Nonlinear and Complex Systems, Beijing Normal University Branch, Beijing 100875 |
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| Cite this article: |
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CAO Zhou-Jian, LI Peng-Fei, HU Gang 2007 Chin. Phys. Lett. 24 882-885 |
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Abstract In periodically driven nonlinear stochastic systems, noise may play a role of enhancing the output periodic signal (termed as stochastic resonance or SR). While in autonomous excitable systems, noise may play a role of increasing coherent motion (termed as coherence resonance or CR). So far the topics of SR and CR have been investigated separately as two major fields of studying the active roles of noise in nonlinear systems. We find that these two topics are closely related to each other. Specifically, SR occurs in such periodically driven systems that the corresponding autonomous systems show CR. The SR with sensitive frequency dependence can be observed when the corresponding autonomous system shows CR with finite characteristic frequency. Moreover, `resona
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Received: 14 November 2006
Published: 26 March 2007
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