A random walker on a ratchet potential: effect of a non Gaussian noise
A random walker on a ratchet potential: effect of a non Gaussian noise
复制标题
DOI：
10.1140/epjb/e2008-00027-y
复制
发表时间：
2007-07
期刊：
影响因子：
--
通讯作者：
S. Mangioni;H. Wio
中科院分区：
文献类型：
--
作者：
S. Mangioni;H. Wio
我们分析了有色非高斯噪声对随机步行者沿棘齿势运动模型的影响。这样的模型是由运动蛋白和肌球蛋白等马达蛋白的运输特性推动的。以前的研究都是在假设白噪声的情况下实现的。然而，对于实际情况，一般来说，我们可以预期这些噪声是相关的，并且是非高斯的。在其他方面，除了随着噪声强度的变化，电流中的最大值外，我们还发现了偏离高斯行为时电流的另一个最佳值。我们展示了当偏离高斯行为时产生的相关影响，特别是与电流的增强相关的影响，并讨论了它与生物和技术情况的相关性。
We analyze the effect of a colored non Gaussian noise on a model of a random walker moving along a ratchet potential. Such a model was motivated by the transport properties of motor proteins, like kinesin and myosin. Previous studies have been realized assuming white noises. However, for real situations, in general we could expect that those noises be correlated and non Gaussian. Among other aspects, in addition to a maximum in the current as the noise intensity is varied, we have also found another optimal value of the current when departing from Gaussian behavior. We show the relevant effects that arise when departing from Gaussian behavior, particularly related to current's enhancement, and discuss its relevance for both biological and technological situations.