Nontrivial solution for Klein-Gordon equation coupled with Born-Infeld theory with critical growth

Abstract

In this paper, we study the following system \begin{eqnarray*} \left\{ \begin{array}{ll} -Δu + V(x)u-(2ω+ϕ)ϕu=λf(u)+|u|^{4}u, \ & \text{in} \ \mathbb{R}^{3}, Δϕ+ βΔ_4ϕ= 4π(ω+ϕ) u^{2}, \ & \text{in}\ \mathbb{R}^{3},\\ \end{array} \right. \end{eqnarray*} where $f(u)$ without any growth and Ambrosetti-Rabinowitz conditions. We use cut-off function and Moser iteration to obtain the existence of nontrivial solution. Finally, as a by-product of our approaches, we get the same result for Klein-Gordon-Maxwell system.