New integrable systems of derivative nonlinear Schr\"odinger equations with multiple components
Abstract
The Lax pair for a derivative nonlinear Schr\"odinger equation proposed by Chen-Lee-Liu is generalized into matrix form. This gives new types of integrable coupled derivative nonlinear Schr\"odinger equations. By virtue of a gauge transformation, a new multi-component extension of a derivative nonlinear Schr\"odinger equation proposed by Kaup-Newell is also obtained.
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