Journal
PHYSICS LETTERS A
Volume 351, Issue 1-2, Pages 97-100Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2005.10.079
Keywords
direct approach; soliton; perturbation
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A direct approach of perturbation theory for the nonlinear Schrodinger equation is developed based on the separation of variables. The first-order effects of perturbation on a kink soliton, showing the slow time dependence of soliton parameters and the first-order correction. (c) 2005 Elsevier B.V. All rights reserved.
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