Alpha invariants and coercivity of the Mabuchi functional on Fano manifolds

Alpha invariants and coercivity of the Mabuchi functional on Fano manifolds
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Fano 流形上 Mabuchi 泛函的 Alpha 不变量和矫顽力

DOI:
10.5802/afst.1515
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发表时间:
2014
期刊:
arXiv: Differential Geometry
影响因子:
--
通讯作者:
R. Dervan
R. Dervan
中科院分区:
--
文献类型:
--
作者:
R. Dervan

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利用Tian α不变量给出了Fano流形上一般K“ahler类的Mabuchi泛函的非线性性的一个判别准则.这推广了Tian在反正则情形下的一个结果,即存在K\“ahler-Einstein度规.我们还证明了α不变量是K“ahler锥上的连续函数。作为应用,我们在一般的一次del Pezzo曲面上给出了新的K“ahler类,其中Mabuchi泛函是强制的.
We give a criterion for the coercivity of the Mabuchi functional for general K\"ahler classes on Fano manifolds in terms of Tian's alpha invariant. This generalises a result of Tian in the anti-canonical case implying the existence of a K\"ahler-Einstein metric. We also prove the alpha invariant is a continuous function on the K\"ahler cone. As an application, we provide new K\"ahler classes on a general degree one del Pezzo surface for which the Mabuchi functional is coercive.
DOI: 10.1093/imrn/rnv291
发表时间: 2014-12
期刊: arXiv: Differential Geometry
影响因子: --
作者:
R. Dervan
通讯作者: R. Dervan