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Nonlinear Schrödinger equation on graphs: recent results and open problems
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Nonlinear Schrödinger equation on graphs: recent results and open problems
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Journal Article
Nonlinear Schrödinger equation on graphs: recent results and open problems
2014
Overview
In this paper, an introduction to the new subject of nonlinear dispersive Hamiltonian equations on graphs is given. The focus is on recently established properties of solutions in the case of the nonlinear Schrödinger (NLS) equation. Special consideration is given to the existence and behaviour of solitary solutions. Two subjects are discussed in some detail concerning the NLS equation on a star graph: the standing waves of the NLS equation on a graph with a δ interaction at the vertex, and the scattering of fast solitons through a Y-junction in the cubic case. The emphasis is on a description of concepts and results and on physical context, without reporting detailed proofs; some perspectives and more ambitious open problems are discussed.
Publisher
Royal Society
Subject
