Least energy sign-changing solutions for Kirchhoff–Poisson systems

Abstract

Abstract The paper deals with the following Kirchhoff–Poisson systems: 0.1 {−(1+b∫R3|∇u|2dx)Δu+u+k(x)ϕu+λ|u|p−2u=h(x)|u|q−2u,x∈R3,−Δϕ=k(x)u2,x∈R3, $$ \textstyle\begin{cases} - ( {1+b\int _{{\mathbb{R}}^{3}} { \vert \nabla u \vert ^{2}\,dx} } ) \Delta u+u+k(x)\phi u+\lambda \vert u \vert ^{p-2}u=h(x) \vert u \vert ^{q-2}u, & x\in {\mathbb{R}}^{3}, \\ -\Delta \phi =k(x)u^{2}, & x\in {\mathbb{R}}^{3}, \end{cases} $$ where the functions k and h are nonnegative, 0≤λ,b $0\le \lambda , b$; 2≤p≤4<q<6 $2\le p\le 4< q<6$. Via a constraint variational method combined with a quantitative lemma, some existence results on one least energy sign-changing solution with two nodal domains to the above systems are obtained. Moreover, the convergence property of ub $u_{b}$ as b↘0 $b \searrow 0$ is established.

Keywords

• Kirchhoff–Poisson systems
• Least energy sign-changing solutions
• Constraint variational method
• Nodal domains