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Weakly Nonlocal Solitary Waves in a Singularly Perturbed Nonlinear Schrödinger Equation

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We consider the nonlinear Schrödinger equation perturbed by the addition of a third‐derivative term whose coefficient constitutes a small parameter. It is known from the work of Wai et al. [1] that this singular perturbation causes the solitary wave solution of the nonlinear Schrödinger equation to become nonlocal by the radiation of small‐amplitude oscillatory waves. The calculation of the amplitude of these oscillatory waves requires the techniques of exponential asymptotics. This problem is re‐examined here and the amplitude of the oscillatory waves calculated using the method of Borel summation. The results of Wai et al. [1] are modified and extended.
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Document Type: Research Article

Affiliations: Monash University

Publication date: April 1, 1995

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