Internal oscillation frequencies and anharmonic effects for the double sine-Gordon kink

M. Salerno, Mogens Rugholm Samuelsen

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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.
Original languageEnglish
JournalPhysical Review B
Volume39
Issue number7
Pages (from-to)4500-4503
ISSN2469-9950
DOIs
Publication statusPublished - 1989

Bibliographical note

Copyright (1989) by the American Physical Society.

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