Acta mathematica scientia,Series A ›› 2026, Vol. 46 ›› Issue (4): 1634-1666.

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Existence, Concentration and Multiplicity of Semiclassical Solutions for a Fractional Kirchhoff Equation with Critical Growth

Lun Guo1(), Wentao Huang2(), Huifang Jia3(), Zheng Pan1,*()   

  1. 1 School of Mathematics and Statistics, South-Central Minzu University, Wuhan 430070
    2 School of Science, East China Jiaotong University, Nanchang 330013
    3 School of Mathematics and Statistics, Guangdong University of Technology, Guangzhou 510520
  • Received:2026-04-05 Revised:2026-05-20 Online:2026-08-26 Published:2026-06-10
  • Contact: Zheng Pan E-mail:lguo@mails.ccnu.edu.cn;wthuang1014@aliyun.com;hf_jia@mails.ccnu.edu.cn;2024110592@mail.scuec.edu.cn
  • Supported by:
    Hubei Provincial Natural Science Foundation of China(2024AFB839);Natural Science Foundation of Jiangxi Province(20232BAB201009);Guangdong Basic and Applied Basic Research Foundation of China(2024A1515012370)

Abstract:

This paper studies the following fractional Kirchhoff-type equation with critical growth

$ \left(\epsilon^{2s}a+\epsilon^{4s-3}b\int_{\mathbb{R}^{3}}|(-\Delta)^{\frac{s}{2}}u|^{2}{\rm d}x\right) (-\Delta)^{s}u+V(x)u=K(x)f(u)+|u|^{2^{*}_{s}-2}u, \ \ u\in H^{s}(\mathbb{R}^{3}), $

where $\epsilon>0$ is a small parameter, $a,b>0$ are constants, $s\in(\frac{3}{4},1)$, $2^{*}_{s}=\frac{6}{3-2s}$ is the Sobolev critical exponent, the potential functions $V,K:\mathbb{R}^{3}\to\mathbb{R}$ are nonnegative continuous functions, and $f:\mathbb{R}\to\mathbb{R}$ is a continuous but non-differentiable subcritical nonlinear term. By using the generalized Nehari manifold method introduced by [Szulkin A, Weth T. Boston: International Press, 2010], the authors prove the existence of ground state solutions and their concentration properties. Furthermore, using Ljusternik-Schnirelmann category theory, they establish a relationship between the number of solutions and the topology of the sets where the potential $V$ attains its minimum and $K$ attains its maximum.

Key words: fractional Kirchhoff equation, critical growth, ground state solution, Ljusternik-Schnirelmann category theory

CLC Number: 

  • O175.23
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