Efficiency optimization in a correlation ratchet with asymmetric unbiased fluctuations
Biological Physics
2007-05-23 v1 General Physics
Abstract
The efficiency of a Brownian particle moving in periodic potential in the presence of asymmetric unbiased fluctuations is investigated. We found that there is a regime where the efficiency can be a peaked function of temperature, which proves that thermal fluctuations facilitate the efficiency of energy transformation, contradicting the earlier findings (H. kamegawa et al. Phys. Rev. Lett. 80 (1998) 5251). It is also found that the mutual interplay between asymmetry of fluctuation and asymmetry of the potential may induce optimized efficiency at finite temperature. The ratchet is not most efficiency when it gives maximum current.
Cite
@article{arxiv.physics/0307012,
title = {Efficiency optimization in a correlation ratchet with asymmetric unbiased fluctuations},
author = {Bao-Quan Ai and Xian-Ju Wang and Guo-Tao Liu and De-Hua Wen and Hui-Zhang Xie and Wei Chen and Liang-Gang Liu},
journal= {arXiv preprint arXiv:physics/0307012},
year = {2007}
}
Comments
10 pages, 7 figures