M. Frick, T. Schneider
Zeitschrift für Physik B Condensed Matter
Paper
Evidence for breather excitations in the sine-Gordon chain
Abstract
Using a molecular-dynamics technique for the classical sine-Gordon chain, we have found that nonlinear breather modes give rise to two excitation branches. A low-frequency resonance is associated with the propagating envelope and a high-frequency peak with the internal oscillations. © 1979 The American Physical Society.
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