文摘
We consider the stationary nonlinear magnetic Choquard equation $$(- {\rm i}\nabla+ A(x))^{2}u + V (x)u = \left(\frac{1}{|x|^{\alpha}}\ast |u|^{p}\right) |u|^{p-2}u,\quad x\in\mathbb{R}^{N}$$ where A is a real-valued vector potential, V is a real-valued scalar potential, N ?3, ${\alpha \in (0, N)}$ and 2 ?(α/N) <?p <?(2N ?α)/(N?). We assume that both A and V are compatible with the action of some group G of linear isometries of ${\mathbb{R}^{N}}$ . We establish the existence of multiple complex valued solutions to this equation which satisfy the symmetry condition $$u(gx) = \tau(g)u(x)\quad{\rm for\, all }\ g \in G,\;x \in \mathbb{R}^{N},$$ where ${\tau : G \rightarrow \mathbb{S}^{1}}$ is a given group homomorphism into the unit complex numbers.