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arXiv · 2207.03218

Semiclassical states for coupled nonlinear Schr\"{o}dinger equations with a critical frequency

Taiyong Chen·Yahui Jiang·Marco Squassina·Jianjun Zhang
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Abstract

In this paper, we are concerned with the coupled nonlinear Schr\"{o}dinger system \begin{align*} \begin{cases} -\varepsilon^{2}\Delta u+a(x)u=\mu_{1}u^{3}+\beta v^{2}u \ \ \ \ \mbox{in}\ \mathbb{R}^{N},\\ -\varepsilon^{2}\Delta v+b(x)v=\mu_{2}v^{3}+\beta u^{2}v \ \ \ \ \ \mbox{in}\ \mathbb{R}^{N}, \end{cases} \end{align*} where $1\leq N\leq3$, $\mu_{1},\mu_{2},\beta>0$, $a(x)$ and $b(x)$ are nonnegative continuous potentials, and $\varepsilon>0$ is a small parameter. We show the existence of positive ground state solutions for the system above and also establish the concentration behaviour as $\varepsilon\rightarrow0$, when $a(x)$ and $b(x)$ achieve 0 with a homogeneous behaviour or vanish in some nonempty open set with smooth boundary.

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Taiyong Chen, Yahui Jiang, Marco Squassina, Jianjun Zhang. 2022-07-07. Semiclassical states for coupled nonlinear Schr\"{o}dinger equations with a critical frequency. https://arxiv.org/abs/2207.03218

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