Mankin Romi, Haljas Astrid, Tammelo Risto, Martila Dmitri
Department of Natural Sciences, Tallinn Pedagogical University, 25 Narva Road, 10120 Tallinn, Estonia.
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Jul;68(1 Pt 1):011105. doi: 10.1103/PhysRevE.68.011105. Epub 2003 Jul 29.
The noise-flatness-induced hypersensitive transport of overdamped Brownian particles in a tilted ratchet system driven by multiplicative nonequilibrium three-level Markovian noise and additive white noise is considered. At low temperatures, the enhancement of current is very sensitive to the applied small static tilting force. It is established that the enhancement of mobility depends nonmonotonically on the parameters (flatness, correlation time) of multiplicative noise. The optimal values of noise parameters maximizing the mobility are found.
考虑了在由乘性非平衡三能级马尔可夫噪声和加性白噪声驱动的倾斜棘轮系统中，噪声平坦度诱导的过阻尼布朗粒子的超敏输运。在低温下，电流的增强对所施加的小静态倾斜力非常敏感。结果表明，迁移率的增强非单调地依赖于乘性噪声的参数（平坦度、相关时间）。找到了使迁移率最大化的噪声参数的最优值。
