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Existence of solutions for a nonlocal variational problem in $\mathbb{R}^2$ with exponential critical growth (1508.04488v1)
Published 19 Aug 2015 in math.AP
Abstract: We study the existence of solution for the following class of nonlocal problem, $$ -\Delta u +V(x)u =\Big( I_\mu\ast F(x,u)\Big)f(x,u) \quad \mbox{in} \quad \mathbb{R}2, $$ where $V$ is a positive periodic potential, $I_\mu=\frac{1}{|x|\mu}$, $0<\mu<2$ and $F(x,s)$ is the primitive function of $f(x,s)$ in the variable $s$. In this paper, by assuming that the nonlinearity $f(x,s)$ has an exponential critical growth at infinity, we prove the existence of solutions by using variational methods.