Nonlinear Schrödinger equations with strongly singular potentials

Details Nonlinear Schrödinger equations with strongly singular potentials Nonlinear Schrödinger equations with strongly singular potentials

2009-03-19

arxiv.org/abs/0903.3301v1

Physics

Mathematical Physics

Scientific paper

In this paper we look for standing waves for nonlinear Schr\"odinger equations $$ i\frac{\partial \psi}{\partial t}+\Delta \psi - g(|y|) \psi -W^{\prime}(| \psi |)\frac{\psi}{| \psi |}=0 $$ with cylindrically symmetric potentials $g$ vanishing at infinity and non-increasing, and a $C^1$ nonlinear term satisfying weak assumptions. In particular we show the existence of standing waves with non-vanishing angular momentum with prescribed $L^2$ norm. The solutions are obtained via a minimization argument, and the proof is given for an abstract functional which presents lack of compactness. As a particular case we prove the existence of standing waves with non-vanishing angular momentum for the nonlinear hydrogen atom equation.

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