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Stochastic Resonance in a Spatially Symmetric and Flashing Periodic Potential Subjected to Correlated Noises |
| NIE Lin-Ru1, GONG Yu-Lan1, MEI Dong-Cheng2 |
| 1Faculty of Science, Kunming University of Science and Technology, Kunming 6500932Department of Physics, Yunnan University, Kunming 650091 |
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NIE Lin-Ru, GONG Yu-Lan, MEI Dong-Cheng 2009 Chin. Phys. Lett. 26 100505 |
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Abstract A Brownian particle in a spatially symmetric and flashing periodic potential subjected to correlated noises is investigated. The exact expression of its current is analytically derived. The numerical results indicate that its current as a function of noise intensity exhibits two peaks in the case of positive correlations, and two vales in the case of negative correlations, i.e., a novel stochastic resonance (SR) phenomenon. The SR is attributed to the harmonic cooperation between the noises and the flashing periodic potential. The conditions under which the SR occurs are also presented.
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| Keywords:
05.40.-a
05.60.Cd
05.70.Ln
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Received: 17 June 2009
Published: 27 September 2009
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| PACS: |
05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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05.60.Cd
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(Classical transport)
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05.70.Ln
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(Nonequilibrium and irreversible thermodynamics)
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