Multiple solutions of a Kirchhoff type elliptic problem with the Trudinger-Moser growth

Abstract

We consider a Kirchhoff type elliptic problem; \begin{equation*} \begin{cases} -\left(1+\alpha \int_{\Omega}|\nabla u|^2dx\right)\Delta u =f(x,u),\ u\ge0\text{ in }\Omega,\\ u=0\text{ on }\partial \Omega, \end{cases} \end{equation*} where $\Omega\subset \mathbb{R}^2$ is a bounded domain with a smooth boundary $\partial \Omega$, $\alpha > 0$ and $f$ is a continuous function in $\overline{\Omega}\times \mathbb{R}$. Moreover, we assume $f$ has the Trudinger-Moser growth. We prove the existence of solutions of (P), so extending a former result by de Figueiredo-Miyagaki-Ruf [11] for the case $\alpha =0$ to the case $\alpha>0$. We emphasize that we also show a new multiplicity result induced by the nonlocal dependence. In order to prove this, we carefully discuss the geometry of the associated energy functional and the concentration compactness analysis for the critical case.