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Perturbation theory for the double sine-Gordon equation |
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| Authors: | Constantine A. Popov |
| Affiliation: | Volgograd State Pedagogical University, Lenina Prospect 27, Volgograd 400131, Russian federation |
| Abstract: | This paper presents a perturbation theory for the double sine-Gordon equation. We obtain a system of differential equations that shows the soliton parameters modification under the influence of the perturbation. For the particular case λ=0 the results transform into the well-known perturbation theory for the sine-Gordon equation. |
| Keywords: | Double sine-Gordon equation Perturbation theory Soliton |
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