Discrete gauge symmetries by Higgsing in four-dimensional F-theory compactifications

Discrete gauge symmetries by Higgsing in four-dimensional F-theory compactifications
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四维 F 理论紧化中 Higgsing 的离散规范对称性

DOI:
10.1007/jhep12(2014)068
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发表时间:
2014
影响因子:
5.4
通讯作者:
Weigand
Weigand
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Mayrhofer;Weigand

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我们研究了表现离散规范对称性的四维的F-理论紧化。在几何上,它们是由两个截面的椭圆形纤毛变形成一个亏格--一个纤维具有两个截面。从四维场论的角度来看,它们是Higgsed U(1)规范对称性的剩余对称性。我们在存在附加SU(5)对称性和相关物质场的情况下实现了这种对称性,给出了计算物质曲线的诱导离散电荷的几何规定,并证明了这种电荷所禁止的汤川耦合的存在。我们给出了场论和几何之间的详细映射,包括希格斯场和希格辛前后无质量态的识别。最后,我们证明了U(1)的希格化导致了一个G-通量,它精确地解释了Calabi-Yau欧拉数的变化,从而使D3的蝌蚪保持不变。
We study F-theory compactifications to four dimensions that exhibit discrete gauge symmetries. Geometrically these arise by deforming elliptic fibrations with two sections to a genus-one fibration with a bi-section. From a four-dimensional field theory perspective they are remnant symmetries from a Higgsed U (1) gauge symmetry. We implement such symmetries in the presence of an additional SU (5) symmetry and associated matter fields, giving a geometric prescription for calculating the induced discrete charge for the matter curves and showing the absence of Yukawa couplings that are forbidden by this charge. We present a detailed map between the field theory and the geometry, including an identification of the Higgs field and the massless states before and after the Higgsing. Finally we show that the Higgsing of the U (1) induces a G-flux which precisely accounts for the change in the Calabi-Yau Euler number so as to leave the D3 tadpole invariant.
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