Normalized solutions for Schr\"{o}dinger systems in dimension two

TL;DR

This paper proves the existence of normalized solutions for a class of nonlinear Schrödinger systems with exponential growth in two dimensions, using variational methods and the Pohozaev manifold.

Contribution

It introduces new results on Schrödinger systems in 2D with exponential nonlinearity, employing variational techniques on the Pohozaev manifold.

Findings

Existence of normalized solutions established

Solutions characterized via variational methods

Novel approach for exponential growth nonlinearities in 2D

Abstract

In this paper, we study the existence of normalized solutions to the following nonlinear Schr\"{o}dinger systems with exponential growth \begin{align*} \left\{ \begin{aligned} &-\Delta u+\lambda_{1}u=H_{u}(u,v), \quad \quad \hbox{in }\mathbb{R}^{2},\\ &-\Delta v+\lambda_{2} v=H_{v}(u,v), \quad \quad \hbox{in }\mathbb{R}^{2},\\ &\int_{\mathbb{R}^{2}}|u|^{2}dx=a^{2},\quad \int_{\mathbb{R}^{2}}|v|^{2}dx=b^{2}, \end{aligned} \right. \end{align*} where $a,b>0$ are prescribed, $\lambda_{1},\lambda_{2}\in \mathbb{R}$ and the functions $H_{u},H_{v}$ are partial derivatives of a Carath\'{e}odory function $H$ with $H_{u},H_{v}$ have exponential growth in $\mathbb{R}^{2}$. Our main results are totally new for Schr\"{o}dinger systems in $\mathbb{R}^{2}$. Using the Pohozaev manifold and variational methods, we establish the existence of normalized solutions to the above problem.