Oscillation mode and ‘‘nonlinear’’ radiation of the double sine-Gordon 2π kink
Author:
- 1 April 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 49 (4) , 3360-3367
Abstract
The collective coordinate method has been used to investigate the oscillation mode of the static and moving π-π kink system of the double sine-Gordon equation. A condition for the linear stability of the system has been found, the interaction parameter λ<0.774. We have shown a pronounced effect of a constant external perturbation generating nonlinear periodic nonsinusoidal oscillations. This radiation appears due to interplay of the nonlinearity and of the perturbation.Keywords
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