On concentration of real solutions for fractional Helmholtz equation

Zifei Shen, Shuijin Zhang

This paper studies the nonlinear fractional Helmholtz equation \begin{equation}\label{main} (-Δ)^{s} u-k^{2} u=Q(x)|u|^{p-2}u, ~~\mathrm{in}~~\mathbb{R}^{N},~~N\geq3, \end{equation…