Internal oscillation frequencies and anharmonic effects for the double sine-Gordon kink
- 1 March 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 39 (7) , 4500-4503
- https://doi.org/10.1103/physrevb.39.4500
Abstract
A simple derivation of the small oscillation frequency around 4π-kink solutions of the double sine-Gordon equation is presented. Small corrections to these frequencies due to anharmonic effects are also numerically and analytically investigated. The analysis is based on energetic considerations and on the mechanical interpretation of a 4π kink as two point particles connected by a spring.This publication has 6 references indexed in Scilit:
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