Concentration of bound states for fractional Schr\"{o}dinger-Poisson system via penalization methods

In this paper, we study the following fractional Schr"{o}dinger-Poisson system \begin{equation*} \left{ \begin{array}{ll} \varepsilon^{2s}(-\Delta)^su+V(x)u+\phi u=g(u) & \hbox{in ${\mathbb{R}}^3$,} \varepsilon^{2t}(-\Delta)^t\phi=u^2,,, u>0& \hbox{in ${\mathbb{R}}^3$,} \end{array} \right. \end{equation*} where $s,t\in (0,1)$, $\epsilon >0$ is a small parameter. Under some local assumptions on $V(x)$ and suitable assumptions on the nonlinearity $g$, we construct a family of positive solutions $u_{\epsilon }\in H_{\epsilon }$ which concentrates around the global minima of $V(x)$ as $\epsilon \to 0$.