Electron. J. Differential Equations, Vol. 2023 (2023), No. 75, pp. 1-20.

Concentration of nodal solutions for semiclassical quadratic Choquard equations

Lu Yang, Xiangqing Liu, Jianwen Zhou

Abstract:
In this article concerns the semiclassical Choquard equation \(-\varepsilon^2 \Delta u +V(x)u = \varepsilon^{-2}( \frac{1}{|\cdot|}* u^2)u\) for \(x \in \mathbb{R}^3\) and small \(\varepsilon\). We establish the existence of a sequence of localized nodal solutions concentrating near a given local minimum point of the potential function \(V\), by means of the perturbation method and the method of invariant sets of descending flow.

Submitted May 18, 2023. Published October 30, 2023.
Math Subject Classifications: 35B05, 35B45.
Key Words: Choquard equation; sign-changing solution; perturbation method; Fredholm operator; nodal solution.
DOI: 10.58997/ejde.2023.75

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Lu Yang
Department of Mathematics
Yunnan University
Kunming, 650091, China
email: 2973434415@qq.com
Xiangqing Liu
Department of Mathematics
Yunnan Normal University
Kunming, 650500, China
email: lxq8u8@163.com
Jianwen Zhou
Department of Mathematics
Yunnan University
Kunming, 650091, China
email: jwzhou@ynu.edu.cn

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