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Asymptotic Dynamics of Breathers in Fermi-Pasta-Ulam Chains

R. Reigada, A. Sarmiento, Katja Lindenberg

cond-mat.stat-mecharXiv:cond-mat/0205323

Abstract

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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