Fractional magnetic Schrödinger-Kirchhoff problems with convolution and critical nonlinearities

Liang, Sihua (author), Repovš, Dušan (author), Zhang, Binlin (author)

In this paper, we are concerned with the existence and multiplicity of solutions for the fractional Choquard-type Schrödinger-Kirchhoff equations with electromagnetic fields and critical nonlinearity: ▫$$\begin{cases} \varepsilon^{2s} N([u]^2_{s,A}) (-\Delta)^s_A u + V(x)u = (|x|^{-\alpha} \ast F(|u|^2)) f(|u|^2)u + |u|^{2^\ast_s-2}u, & x\in \mathbb{R}^N, \\ U(x) \to 0, & \text{as} \quad |x| \to \infty, \end{cases}$$▫ where ▫$(-\Delta)^s_A$▫ is the fractional magnetic operator with ▫$0<s<1$▫, ▫$2^\ast_s = 2N/(N-2s)$▫, ▫$\alpha < \min\{N, 4s\}$▫, ▫$M \colon \mathbb{R}^+_0 \to \mathbb{R}^+_0$▫ is a continuous function, ▫$A\colon \mathbb{R}^N \to \mathbb{R}^N$▫ is the magnetic potential, ▫$F(|u|) =\int^{|u|}_0f(t)dt$▫, and ▫$\varepsilon > 0$▫ is a positive parameter. The electric potential ▫$V \in C(\mathbb{R}^N, \mathbb{R}^+_0)$▫ satisfies ▫$V(x)=0$▫ in some region of ▫$\mathbb{R}^N$▫, which means that this is the critical frequency case. We first prove the ▫$(PS)_c$▫ condition, by using the fractional version of the concentration compactness principle. Then, applying also the mountain pass theorem and the genus theory, we obtain the existence and multiplicity of semiclassical states for the above problem. The main feature of our problems is that the Kirchhoff term ▫$M$▫ can vanish at zero.

• Language: English
• Keywords: Choquard-type equation, critical nonlinearity, fractional magnetic operator, variational method
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: PEF - Faculty of Education; FMF - Faculty of Mathematics and Physics
• Year: 2020
• Number of pages: Str. 2473-2490
• Numbering: Vol. 43, iss. 5
• PID: 20.500.12556/RUL-116616
• UDC: 517.956
• ISSN on article: 0170-4214
• DOI: 10.1002/mma.6057
• COBISS.SI-ID: 18870617
• Publication date in RUL: 29.05.2020

Record is a part of a journal

• Title: Mathematical methods in the applied sciences
• Shortened title: Math. methods appl. sci.
• Publisher: Teubner, Wiley
• ISSN: 0170-4214
• COBISS.SI-ID: 25911808