The solution of the global relation for the derivative nonlinear Schrödinger equation on the half-line

DOI10.1016/J.PHYSD.2010.11.004zbMATH Open1220.37062arXiv1008.5379OpenAlexW2962788919MaRDI QIDQ633713

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Publication date: 29 March 2011

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Abstract: We consider initial-boundary value problems for the derivative nonlinear Schr"odinger (DNLS) equation on the half-line $x>0$. In a previous work, we showed that the solution $q(x,t)$ can be expressed in terms of the solution of a Riemann-Hilbert problem with jump condition specified by the initial and boundary values of $q(x,t)$. However, for a well-posed problem, only part of the boundary values can be prescribed; the remaining boundary data cannot be independently specified, but are determined by the so-called global relation. In general, an effective solution of the problem therefore requires solving the global relation. Here, we present the solution of the global relation in terms of the solution of a system of nonlinear integral equations. This also provides a construction of the Dirichlet-to-Neumann map for the DNLS equation on the half-line.

Full work available at URL: https://arxiv.org/abs/1008.5379

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