Heat conduction in one dimensional nonintegrable systems
arXiv:cond-mat/0002192 · doi:10.1103/PhysRevE.61.3828
Abstract
Two classes of 1D nonintegrable systems represented by the Fermi-Pasta-Ulam (FPU) model and the discrete $Ï^4$ model are studied to seek a generic mechanism of energy transport in microscopic level sustaining macroscopic behaviors. The results enable us to understand why the class represented by the $Ï^4$ model has a normal thermal conductivity and the class represented by the FPU model does not even though the temperature gradient can be established.
4 Revtex Pages, 4 Eps figures included, to appear in Phys. Rev. E, March 2000