Energy transport in anharmonic lattices close to and far from equilibrium

S Lepri, R Livi, A Politi

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Abstract

The problem of stationary heat transport in the Fermi-Pasta-Ulam chain is numerically studied showing that the conductivity diverges in the thermodynamic limit. Simulations were performed with time-reversible thermostats, both for small and large temperature gradients. In the latter case, fluctuations of the heat current are shown to be in agreement with the recent conjectures of Gallavotti and Cohen [Phys. Rev. Lett. 74 (1995) 2694]. (C) 1998 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)140-147
Number of pages8
JournalPhysica. D, Nonlinear Phenomena
Volume119
Issue number1-2
Publication statusPublished - 1 Aug 1998

Keywords

  • heat conduction
  • Nose-Hoover dynamics
  • chaotic hypothesis
  • THERMAL-CONDUCTIVITY
  • DIMENSIONAL LATTICES
  • DYNAMICS
  • BEHAVIOR
  • STATES
  • LAW

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