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arXiv · 2208.02708

Weighted K-stability of $\mathbb Q$-Fano spherical varieties

Yan Li·ZhenYe Li·Feng Wang
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Abstract

Let $G$ be a connected, complex reductive Lie group and $X$ a $\mathbb Q$-Fano $G$-spherical variety. In this paper we compute the weighed non-Archimedean functionals of a $G$-equivariant normal test configurations of $X$ via combinatory data. Also we define a modified Futaki invariant with respect to the weight $g$, and give an expression in terms of intersection numbers. Finally we show the equivalence of different notations of stability and gives a stability criterion on $\mathbb Q$-Fano spherical varieties, which is also a criterion of existence of K\"ahler-Ricci $g$-solitons.

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Yan Li, ZhenYe Li, Feng Wang. 2022-08-04. Weighted K-stability of $\mathbb Q$-Fano spherical varieties. https://arxiv.org/abs/2208.02708

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