Evidence for Breather Excitations in the Sine-Gordon Chain
- 9 April 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 42 (15), 937-940
- https://doi.org/10.1103/physrevlett.42.937
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.Keywords
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