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arXiv 1111.0196math.AGmath.DG
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曲线上稳定丛的模空间上的切丛的稳定性

Stability of tangent bundle on the moduli space of stable bundles on a curve

Jaya N. N. Iyer

摘要:

本文证明了光滑射影曲线$C$上秩为$r>2$且度为$d$的稳定丛(使得$(r,d)=1$)的模空间$\cSU_C(r,d)$的切丛在Mumford-Takemoto意义下总是稳定的.这验证了一个著名的猜想,并且与Picard数为1的Fano簇上Kähler-Einstein度量的自然存在性有关。

英文摘要:

In this paper, we prove that the tangent bundle of the moduli space $\cSU_C(r,d)$ of stable bundles of rank $r>2$ and of fixed determinant of degree $d$ (such that $(r,d)=1$), on a smooth projective curve $C$ is always stable, in the sense of Mumford-Takemoto. This verifies a well-known conjecture, and is related to a conjectural existence of a Kähler-Einstein metric on Fano varieties with Picard number one.

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