Non-Abelian Gauge Symmetry and the Higgs Mechanism in F-Theory

Non-Abelian Gauge Symmetry and the Higgs Mechanism in F-Theory
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F 理论中的非阿贝尔规范对称性和希格斯机制

DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
J. Shaneson
J. Shaneson
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文献类型:
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作者:
A. Grassi;James Halverson;J. Shaneson

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在f理论中,由于模空间中不存在相应的分支,所以奇异纤维分辨率并没有描述规范对称的自发破缺。因此,在全局f理论紧化中,即使是非阿贝尔规范理论也没有得到充分的理解。本文系统地讨论了用f理论中描述规范对称自发破缺的奇异变形来研究非阿贝尔规范对称的问题。由于模空间的这个分支也存在于定义m -理论紧化中,它提供了唯一已知的存在于两个图中的规范论状态的描述;它们是f理论中的弦结。我们讨论了全局变形如何引起局部变形,并给出了即使在不存在全局变形的模型中也可以利用局部变形的例子。利用形变,我们研究了一些新的例子,包括七膜上不允许弱耦合IIb型描述的SU(3)和SU(2)规范理论的非摄动描述。这可能是现象学的兴趣,这些非摄动描述不存在于高阶SU(N)理论。
Singular fiber resolution does not describe the spontaneous breaking of gauge symmetry in F-theory, as the corresponding branch of the moduli space does not exist in the theory. Accordingly, even non-abelian gauge theories have not been fully understood in global F-theory compactifications. We present a systematic discussion of using singularity deformation, which does describe the spontaneous breaking of gauge symmetry in F-theory, to study non-abelian gauge symmetry. Since this branch of the moduli space also exists in the defining M-theory compactification, it provides the only known description of gauge theory states that exists in both pictures; they are string junctions in F-theory. We discuss how global deformations give rise to local deformations, and also give examples where local deformation can be utilized even in models where a global deformation does not exist. Utilizing deformations, we study a number of new examples, including non-perturbative descriptions of SU(3) and SU(2) gauge theories on seven-branes which do not admit a weakly coupled type IIb description. It may be of phenomenological interest that these non-perturbative descriptions do not exist for higher rank SU(N) theories.
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