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Multi-peak solutions for magnetic NLS equations without non-degeneracy conditions

Published online by Cambridge University Press:  20 August 2008

Silvia Cingolani
Affiliation:
Dipartimento di Matematica, Politecnico di Bari, via Orabona 4, 70125 Bari, Italy. [email protected]
Louis Jeanjean
Affiliation:
Équipe de Mathématiques (UMR CNRS 6623), 16 Route de Gray, 25030 Besançon, France. [email protected]
Simone Secchi
Affiliation:
Dipartimento di Matematica ed Applicazioni, Università di Milano-Bicocca, via Cozzi 53, 20125 Milano, Italy. [email protected]
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Abstract

In this work we consider the magnetic NLS equation $$ ( \frac{\hbar}{i} \nabla -A(x))^2 u + V(x)u - f(|u|^2)u \, = 0 \, \qquad \mbox{ in } \mathbb{R}^N\qquad\qquad(0.1)$$ where $N \geq 3$ , $A \colon \mathbb{R}^N \to \mathbb{R}^N$ is a magnetic potential,possibly unbounded, $V \colon \mathbb{R}^N \to \mathbb{R}$ is a multi-well electricpotential, which can vanish somewhere, f is a subcriticalnonlinear term. We prove the existence of a semiclassical multi-peaksolution $u\colon \mathbb{R}^N \to \mathbb{C}$ to (0.1), under conditionson the nonlinearity which are nearly optimal.

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2008

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