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A random walker on a ratchet potential: effect of a non Gaussian noise

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  • S. E. Mangioni
  • H. S. Wio

Abstract

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. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Suggested Citation

  • S. E. Mangioni & H. S. Wio, 2008. "A random walker on a ratchet potential: effect of a non Gaussian noise," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 61(1), pages 67-73, January.
    • Handle: RePEc:spr:eurphb:v:61:y:2008:i:1:p:67-73
    DOI: 10.1140/epjb/e2008-00027-y
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    Cited by:

    1. Zhang, Ruiting & Hou, Zhonghuai & Xin, Houwen, 2011. "Effects of non-Gaussian noise near supercritical Hopf bifurcation," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 390(2), pages 147-153.
    2. Li, Chen-Pu & Chen, Hong-Bin & Fan, Hong & Xie, Ge-Ying & Zheng, Zhi-Gang, 2018. "Cooperation and competition between two symmetry breakings in a coupled ratchet," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 494(C), pages 175-185.

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