Energy transport in anharmonic lattices close to and far from equilibrium

Year: 1998

Authors: Lepri S., Livi R., Politi A.

Autors Affiliation: Max Planck Institut für Physik Koplexer Systeme Nöthnitzer Str. 38, D-01187 Dresden, Germany;
Dipartimento di Fisica e INFM, Largo E. Fermi 2, 50125 Firenze, Italy;
Istituto Nazionale di Ottica e INFN, Largo E. Fermi 6, 50125 Firenze, Italy

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].

Journal/Review: PHYSICA D-NONLINEAR PHENOMENA

Volume: 119 (1/2)      Pages from: 140  to: 147

KeyWords: heat conduction; Nose-Hoover dynamics; chaotic hypothesis
DOI: 10.1016/S0167-2789(98)00076-1

Citations: 82
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