Asymptotic Dynamics of Breathers in Fermi-Pasta-Ulam Chains

Physics – Condensed Matter – Statistical Mechanics

Scientific paper

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Scientific paper

10.1103/PhysRevE.66.046607

We study the asymptotic dynamics of breathers in finite Fermi-Pasta-Ulam
chains at zero and non-zero temperatures. While such breathers are essentially
stationary and very long-lived at zero temperature, thermal fluctuations tend
to lead to breather motion and more rapid decay.

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