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arXiv 1012.4551math.DG
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抛物丛的模空间上的行列式线丛

Determinant line bundle on moduli space of parabolic bundles

Indranil Biswas

摘要:

在\cite{BR1},\cite{BR2}中,构造了稳定抛物丛的模空间上的抛物行列式线丛及其上的厄米特结构,厄米特结构的构造是间接的:抛物行列式线丛通过复盖曲线上通常向量丛的模空间上的行列式线丛的拉回来确定.抛物行列式丛上的Hermite结构被认为是行列式线丛上的Quillen度量在通常向量丛的模空间上的拉回。这里给出了厄米结构的直接构造。为此,我们需要建立一个版本的对应之间的稳定的抛物丛和厄米-爱因斯坦连接在圆锥度规的上下文中。此外,最近获得的抛物线模拟的法尔丁斯的半稳定性准则起着至关重要的作用。

英文摘要:

In \cite{BR1}, \cite{BR2}, a parabolic determinant line bundle on a moduli space of stable parabolic bundles was constructed, along with a Hermitian structure on it. The construction of the Hermitian structure was indirect: The parabolic determinant line bundle was identified with the pullback of the determinant line bundle on a moduli space of usual vector bundles over a covering curve. The Hermitian structure on the parabolic determinant bundle was taken to be the pullback of the Quillen metric on the determinant line bundle on the moduli space of usual vector bundles. Here a direct construction of the Hermitian structure is given. For that we need to establish a version of the correspondence between the stable parabolic bundles and the Hermitian--Einstein connections in the context of conical metrics. Also, a recently obtained parabolic analog of Faltings' criterion of semistability plays a crucial role.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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