Zero mass case for a fractional Berestycki-Lions type problem
arXiv:1602.05726 · doi:10.1515/anona-2016-0153
Abstract
In this work we study the following fractional scalar field equation \begin{equation*}\label{P} \left\{ \begin{array}{ll} (-Δ)^{s} u = g'(u) \mbox{ in } \mathbb{R}^{N} \\ u> 0 \end{array} \right. \end{equation*} where , , is the fractional Laplacian and the nonlinearity is such that . By using variational methods, we prove the existence of a positive solution which is spherically symmetric and decreasing in .