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arXiv 2104.07036hep-th
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不可逆的整体对称性与谱的完备性

Non-Invertible Global Symmetries and Completeness of the Spectrum

Ben Heidenreich, Jacob McNamara, Miguel Montero, Matthew Reece, Tom Rudelius, Irene Valenzuela

摘要:

人们普遍认为,量子引力的相容理论满足两个基本的运动学约束:它们不受任何整体对称性的约束,并且它们包含完整的规范荷谱。对于紧致的阿贝尔规范群,完备性来自于不存在1-形式的整体对称。然而,这种对应关系在更一般的规范群中被打破,在那里1-形式对称性的破缺不足以保证一个完整的谱。我们表明,可以通过扩大我们的对称性的概念,包括不可逆的拓扑算子恢复对应,并证明他们的缺席是足以保证一个完整的频谱任何紧凑的,可能断开规范群。此外,我们证明了一个类似的声明关于扭曲涡的完整性:余维2对象定义的离散holonomy围绕他们的世界体积,如宇宙弦在四维空间。我们讨论如何修改这种对应关系在各种更一般的情况下,包括非紧规范群,希格斯的规范理论,并增加了陈-西蒙斯条款。最后,我们讨论了我们的结果的影响,沼泽计划,以及扭曲弦的存在的现象学意义。

英文摘要:

It is widely believed that consistent theories of quantum gravity satisfy two basic kinematic constraints: they are free from any global symmetry, and they contain a complete spectrum of gauge charges. For compact, abelian gauge groups, completeness follows from the absence of a 1-form global symmetry. However, this correspondence breaks down for more general gauge groups, where the breaking of the 1-form symmetry is insufficient to guarantee a complete spectrum. We show that the correspondence may be restored by broadening our notion of symmetry to include non-invertible topological operators, and prove that their absence is sufficient to guarantee a complete spectrum for any compact, possibly disconnected gauge group. In addition, we prove an analogous statement regarding the completeness of twist vortices: codimension-2 objects defined by a discrete holonomy around their worldvolume, such as cosmic strings in four dimensions. We discuss how this correspondence is modified in various, more general contexts, including non-compact gauge groups, Higgsing of gauge theories, and the addition of Chern-Simons terms. Finally, we discuss the implications of our results for the Swampland program, as well as the phenomenological implications of the existence of twist strings.

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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