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arXiv 1406.0619hep-thmath.AGmath.RT
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Umbral Moonshine和K3表面

Umbral Moonshine and K3 Surfaces

Miranda C. N. Cheng, Sarah Harrison

摘要:

最近,在23个偶幺模Niemeier格的背景下,发现了23个与模形式和有限群有关的阴影月光的例子。事实上,这23个案例中的一个与所谓的Mathieu月光相吻合,这是在K3非线性西格玛模型的背景下发现的。在本文中,我们建立了一个统一的关系之间的所有23例阴影月光和K3西格玛模型,从而采取第一步,把阴影月光的几何和物理背景。这是通过将尼迈耶格的ADE根系与K3曲面可以发展的ADE du Val奇点以及光滑有理曲线在其分辨率中的配置相关联来实现的。我们的结果的几何解释给出的标记的K3表面的Niemeier格。

英文摘要:

Recently, 23 cases of umbral moonshine, relating mock modular forms and finite groups, have been discovered in the context of the 23 even unimodular Niemeier lattices. One of the 23 cases in fact coincides with the so-called Mathieu moonshine, discovered in the context of K3 non-linear sigma models. In this paper we establish a uniform relation between all 23 cases of umbral moonshine and K3 sigma models, and thereby take a first step in placing umbral moonshine into a geometric and physical context. This is achieved by relating the ADE root systems of the Niemeier lattices to the ADE du Val singularities that a K3 surface can develop, and the configuration of smooth rational curves in their resolutions. A geometric interpretation of our results is given in terms of the marking of K3 surfaces by Niemeier lattices.

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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