Dimer diffusion in a washboard potential
Statistical Mechanics
2008-08-03 v2
Abstract
The transport of a dimer, consisting of two Brownian particles bounded by a harmonic potential, moving on a periodic substrate is investigated both numerically and analytically. The mobility and diffusion of the dimer center of mass present distinct properties when compared with those of a monomer under the same transport conditions. Both the average current and the diffusion coefficient are found to be complicated non-monotonic functions of the driving force. The influence of dimer equilibrium length, coupling strength and damping constant on the dimer transport properties are also examined in detail.
Cite
@article{arxiv.0708.2858,
title = {Dimer diffusion in a washboard potential},
author = {E. Heinsalu and M. Patriarca and F. Marchesoni},
journal= {arXiv preprint arXiv:0708.2858},
year = {2008}
}
Comments
Final revised version. 7 pages, 6 figures