Heat conduction in chains of nonlinear oscillators

S Lepri, R Livi, A Politi

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Abstract

We numerically study heat conduction in chains of nonlinear oscillators with time-reversible thermostats. A nontrivial temperature profile is found to set in, which obeys a simple scaling relation for increasing the number N of particles. The thermal conductivity diverges approximately as N-1/2, indicating that chaotic behavior is not enough to ensure the Fourier law. Finally, we show that the microscopic dynamics ensures fulfillment of a macroscopic balance equation for the entropy production.

Original languageEnglish
Pages (from-to)1896-1899
Number of pages4
JournalPhysical Review Letters
Volume78
Issue number10
DOIs
Publication statusPublished - 10 Mar 1997

Keywords

  • thermal-conductivity
  • dynamical ensembles
  • equilibrium
  • states

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