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arXiv 1502.06953hep-th
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具有Z_3规范对称性的F-理论粒子群

F-Theory Vacua with Z_3 Gauge Symmetry

Mirjam Cvetič, Ron Donagi, Denis Klevers, Hernan Piragua, Maximilian Poretschkin

摘要:

离散规范群自然出现在亏格为一的纤维卡-丘流形上的F-理论紧化中。这样的几何形状出现在由属一纤维化的Tate-Shafarevich群参数化的家族中。虽然F-理论紧化在这个族的任何元素上产生相同的物理,但相应的M-理论紧化在这些几何上是不同的,并且通过前者的通量圆约化获得。本文主要研究一般三次空间的Tate-Shafarevich群中的一个三阶元。我们讨论了如何通过一对五维U(1)对称性的希格辛得到不同的M-理论真空和相应的离散规范群。希格斯场产生于$I_2$纤维中的消失环,这些纤维出现在基底中的某个余维2位点上。我们明确地确定了产生相应希格斯场的所有三条曲线。在这种分析中,对基础几何的不同分辨相位的研究起着至关重要的作用。

英文摘要:

Discrete gauge groups naturally arise in F-theory compactifications on genus-one fibered Calabi-Yau manifolds. Such geometries appear in families that are parameterized by the Tate-Shafarevich group of the genus-one fibration. While the F-theory compactification on any element of this family gives rise to the same physics, the corresponding M-theory compactifications on these geometries differ and are obtained by a fluxed circle reduction of the former. In this note, we focus on an element of order three in the Tate-Shafarevich group of the general cubic. We discuss how the different M-theory vacua and the associated discrete gauge groups can be obtained by Higgsing of a pair of five-dimensional U(1) symmetries. The Higgs fields arise from vanishing cycles in $I_2$-fibers that appear at certain codimension two loci in the base. We explicitly identify all three curves that give rise to the corresponding Higgs fields. In this analysis the investigation of different resolved phases of the underlying geometry plays a crucial rôle.

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