Approximate symmetry reduction for perturbed nonlinear Schr?dinger equation
Xie Shui-Ying(谢水英)a) and Lin Ji(林机) b)†
a Mechanical and Electrical Engineering Department, Zhejiang Industry Polytechnic College, Shaoxing 312000, China; b Institute of Nonlinear Physics, Zhejiang Normal University, Jinhua 321004, China
Abstract We investigate the one-dimensional nonlinear Schr?dinger equation with a perturbation of polynomial type. The approximate symmetries and approximate symmetry reduction equations are obtained with the approximate symmetry perturbation theory.
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