Explicit and exact travelling wave solutions for the generalized derivative Schrödinger equation. (English) Zbl 1139.35092

Huang, Ding-Jiang; Li, De-Sheng; Zhang, Hong-Qing

Chaos Solitons Fractals 31, No. 3, 586-593 (2007).

Summary: A new auxiliary equation expansion method and its algorithm is proposed for studying a first order nonlinear ordinary differential equation with a sixth-degree nonlinear term. Being concise and straightforward, the method is applied to the generalized derivative Schrödinger equation. As a result, some new exact travelling wave solutions are obtained which include bright and dark solitary wave solutions, triangular periodic wave solutions and singular solutions. This algorithm can also be applied to other nonlinear wave equations in mathematical physics.

MSC:

35Q55	NLS equations (nonlinear Schrödinger equations)
35Q51	Soliton equations
35A20	Analyticity in context of PDEs

Keywords:

expansion method; bright wave solutions; dark wave solutions

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