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Strange Heat Flux in (An)Harmonic Networks

Published inJournal of statistical physics, vol. 114, no. 1/2, p. 515-523
Publication date2004-01
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, 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.

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Keywords
  • Nonequilibrium statistical mechanics
  • Entropy production
  • Heat conduction
Citation (ISO format)
ECKMANN, Jean-Pierre, ZABEY, Emmanuel. Strange Heat Flux in (An)Harmonic Networks. In: Journal of statistical physics, 2004, vol. 114, n° 1/2, p. 515–523. doi: 10.1023/B:JOSS.0000003119.91989.48
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Identifiers
ISSN of the journal0022-4715
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