Journal
PHYSICAL REVIEW E
Volume 61, Issue 4, Pages 3828-3831Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevE.61.3828
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Two classes of one-dimensional nonintegrable systems represented by the Fermi-Pasta-Ulam (FPU) model and the discrete phi(4) model are studied to seek a generic mechanism of energy transport on a microscopic level sustaining macroscopic behaviors. The results enable us to understand why the class represented by the phi(4) model has a normal thermal conductivity and the class represented by the EPLT model does not even though the temperature gradient can be established.
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