Energy Relaxation in Fermi-Pasta-Ulam Arrays

Details Energy Relaxation in Fermi-Pasta-Ulam Arrays Energy Relaxation in Fermi-Pasta-Ulam Arrays

2001-09-20

arxiv.org/abs/cond-mat/0109361v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1016/S0378-4371(01)00573-8

The dynamics of energy relaxation in thermalized one- and two-dimensional arrays with nonlinear interactions depend in detail on the interactions and, in some cases, on dimensionality. We describe and explain these differences for arrays of the Fermi-Pasta-Ulam type. In particular, we focus on the roles of harmonic contributions to the interactions and of breathers in the relaxation process.

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