Relaxation of classical many-body hamiltonians in one dimension
Statistical Mechanics
2009-10-31 v1 chao-dyn
Chaotic Dynamics
Abstract
The relaxation of Fourier modes of hamiltonian chains close to equilibrium is studied in the framework of a simple mode-coupling theory. Explicit estimates of the dependence of relevant time scales on the energy density (or temperature) and on the wavenumber of the initial excitation are given. They are in agreement with previous numerical findings on the approach to equilibrium and turn out to be also useful in the qualitative interpretation of them. The theory is compared with molecular dynamics results in the case of the quartic Fermi-Pasta-Ulam potential.
Keywords
Cite
@article{arxiv.cond-mat/9809105,
title = {Relaxation of classical many-body hamiltonians in one dimension},
author = {Stefano Lepri},
journal= {arXiv preprint arXiv:cond-mat/9809105},
year = {2009}
}
Comments
9 pag. 6 figs. To appear in Phys.Rev. E