Existence of Multi-bump Solutions for the Magnetic Schrödinger–Poisson System in $$\pmb {{\mathbb {R}}}^{3}$$ R 3
2021
This paper concerns the following magnetic Schrodinger–Poisson system $$\begin{aligned} {\left\{ \begin{array}{ll} -(\nabla +i A(x))^{2}u+(\lambda V(x)+Z(x))u+\phi u=f(\left| u\right| ^{2})u ,&{} \text { in }{{\mathbb {R}}}^{3}, \\ -\varDelta \phi = u^{2}, &{} \text { in } {\mathbb {R}}^{3}, \end{array}\right. } \end{aligned}$$
where $$\lambda $$
is a positive parameter, f has subcritical growth, the potentials V, $$Z:{\mathbb {R}}^{3}\rightarrow {\mathbb {R}}$$
are continuous functions verifying some conditions, the magnetic potential $$A \in L_\mathrm{loc}^{2}({\mathbb {R}}^{3}, {\mathbb {R}}^{3}) $$
. Assuming that the zero set of V(x) has several isolated connected components $$\varOmega _{1},\ldots ,\varOmega _{k}$$
such that the interior of $$\varOmega _{j}$$
is non-empty and $$\partial \varOmega _{j}$$
is smooth, where $$j\in \left\{ 1,\ldots ,k\right\} $$
, then for $$\lambda >0$$
large enough, we show that the above system has at least $$2^{k}-1$$
multi-bump solutions by using variational methods.
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