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Abstract
We apply the direct perturbation method to an integrable nonlinear Schrdinger equation with a correction term to obtain its asymptotic solutions. It is shown that there is a good qualitative agreement between the asymptotic and the exact solutions when ε is small enough. Then the direct perturbation method is applied to the perturbed N-component nonlinear Schrdinger equations and their asymptotical solutions are obtained.

Keywords:
direct perturbation method/

perturbation/

perturbed N-component nonlinear Schr dinger equation/

　asymptotical solution
Authors and contacts
Cheng Xue-Ping,

Lin Ji,

Wang Zhi-Ping

1.
References

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Vol. 56, Issue 6 - 2007-03-20

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