String Universality and Non-Simply-Connected Gauge Groups in 8DCvetič, Mirjam (Avtor) Dierigl, Markus (Avtor) Lin, Ling (Avtor) Zhang, Hao Y. (Avtor) supergravity theoriesstring theory8D string modelsWe present a consistency condition for 8D N 1 supergravity theories with nontrivial 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.American Physical Society20202023-10-16 14:09:00Znanstveno delo86169sl