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We study the following nonlinear Choquard equation driven by a fractionalLaplacian: $$ (-\Delta)^{s}u+ u =(|x|^{-\mu}\astF(u))f(u)|{4.14mm}{in}|{1.14mm} \mathbb{R}^N, $$ with $N\geq3$, $s\in(0,1)$ and$\mu\in(0,N)$. By Supposing that the nonlinearities satisfy the generalBerestycki-Lions type conditions \cite{BL}, we are able to prove the existenceof groundstates for this equation by variational methods.

Groundstates for nonlinear fractional Choquard equations with general nonlinearities