Bifurcation into spectral gaps for strongly indefinite Choquard equations

Huxiao Luo, Bernhard Ruf, Cristina Tarsi

We consider the semilinear elliptic equations $$ \left\{ \begin{array}{ll} &-Δu+V(x)u=\left(I_α\ast |u|^p\right)|u|^{p-2}u+λu\quad \hbox{for } x\in\mathbb R^N, \\ &u(x) \to 0 \hbox…