For the affine vertex algebra $V_k(\mathfrak{ g})$ at an admissible level $k$ of $\hat{ \mathfrak{ g}}$, we prove that certain subcategory of weak $V_k(\mathfrak{ g})$-module category is semisimple. As a consequence, we show that $V_k(\mathfrak{ g})$ is rational with respect to a family of Virasoro elements. We also prove that certain affine vertex operator superalgebras and minimal $W$-algebras are rational with respect to a family of Virasoro elements.
Categories: math.QA