Fluctuating noise drives Brownian transport
Statistical Mechanics
2015-03-19 v2
Abstract
The transport properties of Brownian ratchet was studied in the presence of stochastic intensity noise (SIN) in both overdamped and underdamped regimes. In the overdamped case, analytical solution using the matrix continued fraction method revealed the existence of a maximum current when the noise intensity fluctuates on intermediate time scale regions. Similar effects were observed for the underdamped case by Monte Carlo simulations. The optimal time-correlation for the Brownian transport coincided with the experimentally observed time-correlation of the extrinsic noise in Esherichia coli gene expression and implied the importance of environmental noise for molecular mechanisms.
Keywords
Cite
@article{arxiv.1112.5287,
title = {Fluctuating noise drives Brownian transport},
author = {Yoshihiko Hasegawa and Masanori Arita},
journal= {arXiv preprint arXiv:1112.5287},
year = {2015}
}
Comments
22 pages, 8 figures