Long time behaviors for the inhomogeneous NLS with a potential in ${\mathbb{R}}^3$

In this article, we aim to study the scattering of the solution to the focusing inhomogeneous nonlinear Schr"odinger equation with a potential of form \begin{align*} i\partial_t u+\Delta u- Vu=-|x|^{-b}|u|^{p-1}u \end{align*} in the energy space $H^1({\mathbb{R}}^3)$. We prove a scattering criterion, and then we use it together with Morawetz estimate to show the scattering theory, which generalizes the results of Dinh \cite{DD} to the non-radial symmetric case.