Stochastic Resonance and Ratchets: Two Closely Related Phenomena in Brownian Motors
QIAN Min1, WANG Yan1, ZHANG Xue-Juan1,2
1Key Laboratory of Pure and Applied Mathematics, School of Mathematical Sciences, Peking University, Beijing 100871
2Department of Mathematics, Shaoxing College of Arts and Sciences, Shaoxing 312000
Stochastic Resonance and Ratchets: Two Closely Related Phenomena in Brownian Motors
QIAN Min1;WANG Yan1;ZHANG Xue-Juan1,2
1Key Laboratory of Pure and Applied Mathematics, School of Mathematical Sciences, Peking University, Beijing 100871
2Department of Mathematics, Shaoxing College of Arts and Sciences, Shaoxing 312000
Abstract： Ratchet effect as well as the phenomenon of stochastic resonance (SR) is investigated in a simple flashing ratchet model. Numerical simulations show that both the power spectrum amplitude and the mean mobility of the system vary non-monotonically in similar manners with the increase of the noise intensity and both reach their highest point nearly at the same noise level. We point out that the consistency of these two phenomena are just due to the existence of circular flux in non-equilibrium state.
QIAN Min;WANG Yan;ZHANG Xue-Juan;. Stochastic Resonance and Ratchets: Two Closely Related Phenomena in Brownian Motors[J]. 中国物理快报, 2003, 20(6): 810-812.
QIAN Min, WANG Yan, ZHANG Xue-Juan,. Stochastic Resonance and Ratchets: Two Closely Related Phenomena in Brownian Motors. Chin. Phys. Lett., 2003, 20(6): 810-812.
2003, Vol. 20 
