A random walker on a ratchet potential: Effect of a non Gaussian noise
arXiv:0707.3206 · doi:10.1140/epjb/e2008-00027-y
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.
arXiv commentSubmitted to Europ.Phys. J. B (LaTex, 16 pgs, 8 figures)
References in corpus (6)
- Brownian motors: noisy transport far from equilibrium
- Transport and current reversal in stochastically driven ratchets
- Effect of Non-Gaussian Noise Sources in a Noise Induced Transition
- Disordering effects of color in nonequilibrium phase transitions induced by multiplicative noise
- Current and efficiency enhancement in Brownian motors driven by non Gaussian noises
- A random walker on a ratchet