1Department of Applied Mathematics and Physics, Hebei University of Technology, Tianjin 300130
2China Institute of Atomic Energy, Beijing 102413
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
Current Reversal in a Flashing Correlation Ratchet
1Department of Applied Mathematics and Physics, Hebei University of Technology, Tianjin 300130
2China Institute of Atomic Energy, Beijing 102413
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
Abstract： A flashing correlation ratchet model is proposed, in which the transport of Brownian particles driven by additive colored noise of Ornstein-Uhlenbeck type in a flashing ratchet is studied by Monte Carlo simulation. The stationary current vs the noise strength and the correlation time is obtained and analyzed. For a fixed rate of potential flashing, the novel phenomena of current reversal and reentry occur. The conditions for the occurrence of these phenomena are found. The influence of the flipping rate is also discussed. This finding might be relevant to the fact that the protein motors with similar structure can move in opposite directions on the same kind of microtubule.
1999, Vol. 16 
