Green's Function Method for Perturbed sine-Gordon Equation

The usual Green's function method is introduced to show the completeness of the squared Jost solutions of the multi-soliton case in this work. Since sine-Gordon equation contains second derivative in time, the known procedure with generalized Marchenko equation to show completeness relation of...

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Published in:Communications in theoretical physics 2004-06, Vol.41 (6), p.907-910
Main Authors: Feng-Ming, Liu, Hao, Cai, Zheng-You, Liu, Nian-Ning, Huang
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Hao, Cai
Zheng-You, Liu
Nian-Ning, Huang
description The usual Green's function method is introduced to show the completeness of the squared Jost solutions of the multi-soliton case in this work. Since sine-Gordon equation contains second derivative in time, the known procedure with generalized Marchenko equation to show completeness relation of the eigenfunctions of linearized equation is unavailable. And the explicit expressions of Jost solutions are not necessary here. Thus a general method of direct perturbation method for the perturbed sine-Gordon equation is developed.
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title Green's Function Method for Perturbed sine-Gordon Equation
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