arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math/0610301math.AG
收藏

P^1上抛物Higgs丛的代数Nahm变换

Algebraic Nahm transform for Parabolic Higgs Bundles on P^1

K. Aker, Sz. Szabo

摘要:

我们研究了抛物型Higgs丛在投影线\PP^1上的Nahm变换,其中对数奇点在有限集P上。这样的Higgs丛可以由它的谱数据给出:一个Hirzebruch表面Z和一个相干层M在Z上,支持在1维和远离无穷远。我们根据这些数据描述变换。主要的技术工具是相干层关于爆破的适当变换的概念。最后证明了模空间上诱导映射的主要性质:超Kaehler结构的对合性和保持性。

英文摘要:

We study Nahm transformation for parabolic Higgs bundles on the projective line \PP^1, with logarithmic singularities on a finite set P. Such a Higgs bundle can be given by its spectral data: a Hirzebruch surface Z together with a coherent sheaf M on Z, supported in dimension 1 and away from infinity. We describe the transform in terms of these data. The main technical tool is the notion of proper transform of a coherent sheaf with respect to a blow-up. Finally, we prove the main properties of the induced map on moduli spaces: involutibility and preservation of the hyper-Kaehler structure.

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。

↑