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arXiv 1002.1108math.DG
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Higgs G-丛空间的莫尔斯理论

Morse theory for the space of Higgs G-bundles

Indranil Biswas, Graeme Wilkin

摘要:

将一个$C^\infty$主$G$ -丛$E^0_G$固定在紧致连通黎曼曲面$X$上,其中$G$是一个连通复约化线性代数群。本文研究了$E^0_G$上光滑联络空间的余切丛上的Yang-Mills-Higgs泛函的梯度流.我们证明,这个流保持希格斯$G$ -束的子集,而且,从这个子集的任何一点发出的流有一个限制。给定Higgs $G$ -丛,我们确定了通过它的积分曲线的极限点,推广了第二作者关于Higgs向量丛的结果.

英文摘要:

Fix a $C^\infty$ principal $G$--bundle $E^0_G$ on a compact connected Riemann surface $X$, where $G$ is a connected complex reductive linear algebraic group. We consider the gradient flow of the Yang--Mills--Higgs functional on the cotangent bundle of the space of all smooth connections on $E^0_G$. We prove that this flow preserves the subset of Higgs $G$--bundles, and, furthermore, the flow emanating from any point of this subset has a limit. Given a Higgs $G$--bundle, we identify the limit point of the integral curve passing through it. These generalize the results of the second named author on Higgs vector bundles.

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