Negative velocity fluctuations of pulled reaction fronts
Statistical Mechanics
2015-05-28 v3 Populations and Evolution
Abstract
The position of a reaction front, propagating into an unstable state, fluctuates because of the shot noise. What is the probability that the fluctuating front moves considerably slower than its deterministic counterpart? Can the noise arrest the front motion for some time, or even make it move in the wrong direction? We present a WKB theory that assumes many particles in the front region and answers these questions for the microscopic model A->2A, 2A->A and random walk.
Cite
@article{arxiv.1106.3547,
title = {Negative velocity fluctuations of pulled reaction fronts},
author = {Baruch Meerson and Pavel Sasorov},
journal= {arXiv preprint arXiv:1106.3547},
year = {2015}
}
Comments
5 pages, 2 figures, revised version