Vanishing for Hodge Ideals of ℚ-Divisors

Abstract

Abstract Mustaţă and Popa [ 7] introduced the notion of Hodge ideals for an effective $\mathbb{Q}$-divisor $D$ and proved a vanishing theorem for Hodge ideals, which generalizes Nadel vanishing for multiplier ideals. However, their proof needs an extra assumption on the existence of $\ell $-roots of the line bundle $\mathscr{O}_X(\ell D)$, which is not necessary for Nadel vanishing. In this paper, we prove that vanishing for Hodge ideals still holds even without this assumption.