Radial ground state solutions for Choquard equations with Hardy-Littlewood-Sobolev lower critical growth

In this paper, we investigate the following autonomous Choquard equation −Δu+u=(Iα∗F(u))F′(u)in RN, where N≥3, Iα denotes the Riesz potential of order α∈(0,N) and F satisfies general critical growt...