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  • Variational analysis for nonlocal Yamabe-type systems
    Xiang, Mingqi ; Molica Bisci, Giovanni, 1975- ; Zhang, Binlin
    The paper is concerned with existence, multiplicity and asymptotic behavior of (weak) solutions for nonlocal systems involving critical nonlinearities. More precisely, we consider ▫$$\begin{cases} M ... \Big(|u|^2_s - \mu \int_{\mathbb{R}^3} V(x) |u|^2 dx \Big) [(-\Delta)^s u - \mu V(x)u] - \phi |u|^{2^\ast_{s,t} - 2}u \\ = \lambda h(x) |u|^{p-2}u + |u|^{2^\ast_s - 2}u & \text{in} \quad \mathbb{R}^3 \\ (-\Delta)^t \phi = |u|^{2^\ast_{s,t}} & \text{in} \quad \mathbb{R}^3 , \end{cases}$$▫ where ▫$(-\Delta)^s$▫ is the fractional Lapalcian, ▫$[u]_s$▫ is the Gagliardo seminorm of ▫$u$▫, ▫$M \colon \mathbb{R}^+_0 \to \mathbb{R}^+_0$▫ is a continuous function satisfying certain assumptions, ▫$V(x) = |x|^{-2s}$▫ is the Hardy potential function, ▫$2^\ast_{s, t} = (3+2t)/(3-2s)$▫, ▫$s,t \in (0, 1)$▫, ▫$\lambda, \, \mu$▫ are two positive parameters, ▫$1 < p < 2^\ast_s = 6/(3-2s)$▫ and ▫$h \in L^{2^\ast_s/(2^\ast_s - p)} (\mathbb{R}^3)$▫. By using topological methods and the Krasnoleskii's genus theory, we obtain the existence, multiplicity and asymptotic behaviour of solutions for above problem under suitable positive parameters ▫$\lambda$▫ and ▫$\mu$▫. Moreover, we also consider the existence of nonnegative radial solutions and non-radial sign-changing solutions. The main novelties are that our results involve the possibly degenerate Kirchhoff function and the upper critical exponent in the sense of Hardy-Littlehood-Sobolev inequality. We emphasize that some of the results contained in the paper are also valid for nonlocal Schrödinger-Maxwell systems on Cartan-Hadamard manifolds.
    Vir: Discrete and continuous dynamical systems. Series S. - ISSN 1937-1632 (Vol. 13, iss. 7, July 2020, str. 2069-2094)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2020
    Jezik - angleški
    COBISS.SI-ID - 18826841

vir: Discrete and continuous dynamical systems. Series S. - ISSN 1937-1632 (Vol. 13, iss. 7, July 2020, str. 2069-2094)

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