Heat conduction in one-dimensional lattice dynamical systems far from equilibrium

Details Heat conduction in one-dimensional lattice dynamical systems far from equilibrium Heat conduction in one-dimensional lattice dynamical systems far from equilibrium

2005-08-26

arxiv.org/abs/cond-mat/0508619v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

We study heat conduction in one dimensional lattice dynamical systems far from equilibrium. The Fermi-Pasta-Ulam model and the $\phi^4$ model are numerically compared to elucidate differences between momentum-conserving and nonconserving systems. As a results, it is found that the heat flux in the $\phi^4$ model does not increase monotonically as the temperature differences at the ends of the lattice is increased, while it does in the FPU chain.

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