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Article
Report number	arXiv:2008.10605 ; CERN-TH-2020-138 ; UPR-1306-T
Title	String Universality and Non-Simply-Connected Gauge Groups in 8d
Author(s)	Cvetič, Mirjam (Pennsylvania U. ; Maribor U.) ; Dierigl, Markus (Pennsylvania U.) ; Lin, Ling (CERN) ; Zhang, Hao Y. (Pennsylvania U.)
Publication	2020-11-20
Imprint	2020-08-24
Number of pages	6
Note	7 pages, two-column style; v2: revised version with extended discussion on interplay between 1-form anomaly and worldsheet current algebra bounds, references added; v3: typos corrected
In:	Phys. Rev. Lett. 125 (2020) 211602
DOI	10.1103/PhysRevLett.125.211602
Subject category	hep-th ; Particle Physics - Theory
Abstract	We present a consistency condition for 8d ${\cal N} = 1$ supergravity theories with non-trivial global structure $G/Z$ for the non-Abelian gauge group, based on an anomaly involving the $Z$ 1-form center symmetry. The interplay with other Swampland criteria identifies the majority of 8d theories with gauge group $G/Z$, which have no string theory realization, as inconsistent quantum theories when coupled to gravity. While this condition is equivalent to geometric properties of elliptic K3 surfaces in F-theory compactifications, it constrains the unexplored landscape of gauge groups in other 8d string models.
Copyright/License	preprint: (License: CC-BY-4.0) publication: © 2020-2024 authors (License: CC-BY-4.0), sponsored by SCOAP³

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