Microscopic chaos from Brownian motion in a one-dimensional anharmonic oscillator chain
Chaotic Dynamics
2009-11-07 v2 Statistical Mechanics
Abstract
The problem of relating microscopic chaos to macroscopic behavior in a many-degrees-of-freedom system is numerically investigated by analyzing statistical properties associated to the position and momentum of a heavy impurity embedded in a chain of nearest-neighbor anharmonic Fermi-Pasta-Ulam oscillators. For this model we have found that the behavior of the relaxation time of the momentum autocorrelation function of the impurity is different depending on the dynamical regime (either regular or chaotic) of the lattice.
Keywords
Cite
@article{arxiv.nlin/0201059,
title = {Microscopic chaos from Brownian motion in a one-dimensional anharmonic oscillator chain},
author = {M. Romero-Bastida and E. Braun},
journal= {arXiv preprint arXiv:nlin/0201059},
year = {2009}
}
Comments
5 pages REVTeX, 6 eps figures, to appear in Phys. Rev. E