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Entropic Stochastic Resonance Driven by Colored Noise |
ZHAO Liang, LUO Xiao-Qin, WU Dan, ZHU Shi-Qun, GU Ji-Hua |
| School of Physical Science and Technology, Suzhou University,Suzhou 215006 |
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ZHAO Liang, LUO Xiao-Qin, WU Dan et al 2010 Chin. Phys. Lett. 27 040503 |
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Abstract The phenomenon of entropic stochastic resonance (ESR) in a two-dimensional confined system driven by a transverse periodic force is investigated when the colored fluctuation is included in the system. Applying the method of unified colored noise approximation, the approximate Fokker-Planck equation can be derived in the absence of the periodic force. Through the escaping rate of the Brownian particle from one well to the other, the power spectral amplification can be obtained. It is found that increasing the values of the noise correlation time and the signal frequency can suppress the ESR of the system.
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| Keywords:
05.40.-a
05.40.Ca
05.10.Gg
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Received: 10 November 2009
Published: 27 March 2010
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| PACS: |
05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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05.40.Ca
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(Noise)
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05.10.Gg
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(Stochastic analysis methods)
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