Strange Heat Flux in (An)Harmonic Networks
Chaotic Dynamics
2009-11-10 v1 Statistical Mechanics
Abstract
We study the heat transport in systems of coupled oscillators driven out of equilibrium by Gaussian heat baths. We illustrate with a few examples that such systems can exhibit ``strange'' transport phenomena. In particular, {\em circulation} of heat flux may appear in the steady state of a system of three oscillators only. This indicates that the direction of the heat fluxes can in general not be "guessed" from the temperatures of the heat baths. Although we primarily consider harmonic couplings between the oscillators, we explain why this strange behavior persists under weak anharmonic perturbations.
Keywords
Cite
@article{arxiv.nlin/0305006,
title = {Strange Heat Flux in (An)Harmonic Networks},
author = {Jean-Pierre Eckmann and Emmanuel Zabey},
journal= {arXiv preprint arXiv:nlin/0305006},
year = {2009}
}