Stability of Travelling Wave Solutions to the Sine-Gordon Equation

Details Stability of Travelling Wave Solutions to the Sine-Gordon Equation Stability of Travelling Wave Solutions to the Sine-Gordon Equation

2010-10-13

arxiv.org/abs/1010.2759v1

Mathematics

Spectral Theory

Scientific paper

We give a geometric proof of spectral stability of travelling kink wave solutions to the sine-Gordon equation. For a travelling kink wave solution of speed $c \neq \pm 1$, the wave is spectrally stable. The proof uses the Maslov index as a means for determining the lack of real eigenvalues. Ricatti equations and further geometric considerations are also used in establishing stability.

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