Coherence Resonance in the System with Periodical Potential and Driven by Correlated Noises
YANG Ming1,3, LI Xiang-Lian1, CAO Li1,2,3, WU Da-Jin1,2,3
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
3State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
Coherence Resonance in the System with Periodical Potential and Driven by Correlated Noises
YANG Ming1,3;LI Xiang-Lian1;CAO Li1,2,3;WU Da-Jin1,2,3
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
3State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
Abstract： We study the ratchet model with both thermal and potential fluctuations, discussing analytically the coherence resonance of the particle moving in such a potential field. It is found that the correlation between the thermal and potential fluctuations has significant effect on the coherence of the system, i.e. negative correlation enhances the coherence of the system greatly, and with positive correlation, there appears the phenomenon that the coherence suppression and enhancement occur alternatively as the additive noise becomes larger.
YANG Ming;LI Xiang-Lian;CAO Li;;WU Da-Jin;. Coherence Resonance in the System with Periodical Potential and Driven by Correlated Noises[J]. 中国物理快报, 2004, 21(7): 1220-1223.
YANG Ming, LI Xiang-Lian, CAO Li, , WU Da-Jin,. Coherence Resonance in the System with Periodical Potential and Driven by Correlated Noises. Chin. Phys. Lett., 2004, 21(7): 1220-1223.
2004, Vol. 21 
