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arXiv 2312.13360hep-th
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红外下的非连通规范群

Disconnected gauge groups in the infrared

Guillermo Arias-Tamargo, Mario De Marco

AI总结:

本文提出在Seiberg-Witten曲线层面识别Z2作用并取商的方法,研究对4d N=2 SU(N)理论规范电荷共轭后所得非连通规范群理论的模空间奇点与物理,并探讨其对SCFT分类、非可逆对称性和弦论实现的意义。

摘要:

对一个量子场论的离散0-形式对称性进行规范,是一种改变规范群整体形式但不改变其微扰动力学的操作。在这项工作中,我们研究了对具有SU(N)规范群和基础超多重态的4d N=2理论中的电荷共轭进行规范后所得理论的Seiberg-Witten解。我们方法的基本思想是在SW曲线的层面上识别Z2作用并执行商运算,该方法也应适用于非拉格朗日理论。我们研究了这些理论的动力学方面,例如其模空间奇点及相应的物理;特别是,我们探索了由商运算产生的复结构奇点。我们还讨论了我们的工作对三个问题的若干启示:4d SCFT的几何分类、从SW几何研究非可逆对称性,以及具有非连通规范群的理论的弦论工程实现。

英文摘要:

Gauging a discrete 0-form symmetry of a QFT is a procedure that changes the global form of the gauge group but not its perturbative dynamics. In this work, we study the Seiberg-Witten solution of theories resulting from the gauging of charge conjugation in 4d $\mathcal{N} = 2$ theories with $SU(N)$ gauge group and fundamental hypermultiplets. The basic idea of our procedure is to identify the $\mathbb{Z}_2$ action at the level of the SW curve and perform the quotient, and it should also be applicable to non-lagrangian theories. We study dynamical aspects of these theories such as their moduli space singularities and the corresponding physics; in particular, we explore the complex structure singularity arising from the quotient procedure. We also discuss some implications of our work in regard to three problems: the geometric classification of 4d SCFTs, the study of non-invertible symmetries from the SW geometry, and the String Theory engineering of theories with disconnected gauge groups.

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