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Publication
Physical Review Letters
Paper
Observation of cluster waves and their lifetime
Abstract
Using the molecular-dynamics technique we have studied a linear chain with quartic anharmonicity. Particular solutions of the equation of motion, representing clusters (domains), are shown to be relevant for a statistical description of the dynamics. A new excitation branch and the associated central-peak phenomenon are traced back to traveling cluster waves and their lifetime. © 1975 The American Physical Society.