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arXiv 1709.01952hep-thmath.RT
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K3椭圆亏格与Umbral Moonshine模

K3 Elliptic Genus and an Umbral Moonshine Module

Vassilis Anagiannis, Miranda C. N. Cheng, Sarah M. Harrison

摘要:

阴影月光连接的对称群的23个尼迈耶格与23套著名的模拟模形式。这23种暗月光与$K3$弦论的对称性有统一的关系。此外,具有Conway散在对称性的超对称顶点算子代数与$K3$椭圆亏格也有密切的关系。受月光与$K3$弦理论之间的上述两种关系的启发,我们通过对24个手征费米子和两对费米子鬼和玻色子鬼的自由理论进行轨道折叠,构造了手征CFT。本文主要研究根系统由6个$D_4$根系统的拷贝给出的Niemeier格对应的阴影月光的情形。这种CFT,然后导致一个无限维的分次模的本影群$G^{D_4^{\oplus 6}}$的分次字符相吻合的本影月光功能的建设。我们还评论如何可以恢复所有对应于Niemeier根系$A_5^{\oplus 4}D_4$,$A_7^{\oplus 2}D_5^{\oplus 2}$,$A_{11}D_7 E_6$,$A_{17}E_7$,和$D_{10}E_7^{\oplus 2}$的本影月光功能。

英文摘要:

Umbral moonshine connects the symmetry groups of the 23 Niemeier lattices with 23 sets of distinguished mock modular forms. The 23 cases of umbral moonshine have a uniform relation to symmetries of $K3$ string theories. Moreover, a supersymmetric vertex operator algebra with Conway sporadic symmetry also enjoys a close relation to the $K3$ elliptic genus. Inspired by the above two relations between moonshine and $K3$ string theory, we construct a chiral CFT by orbifolding the free theory of 24 chiral fermions and two pairs of fermionic and bosonic ghosts. In this paper we mainly focus on the case of umbral moonshine corresponding to the Niemeier lattice with root system given by 6 copies of $D_4$ root system. This CFT then leads to the construction of an infinite-dimensional graded module for the umbral group $G^{D_4^{\oplus 6}}$ whose graded characters coincide with the umbral moonshine functions. We also comment on how one can recover all umbral moonshine functions corresponding to the Niemeier root systems $A_5^{\oplus 4}D_4$, $A_7^{\oplus 2}D_5^{\oplus 2}$ , $A_{11}D_7 E_6$, $A_{17}E_7$, and $D_{10}E_7^{\oplus 2}$.

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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