2 papers
hep-th2026
Dai-Freed anomalies and level matching in heterotic asymmetric orbifolds
Peng Cheng, Hector Parra De Freitas
We study asymmetric orbifolds of the heterotic string from the perspective of worldsheet Dai-Freed anomalies. Focusing on cyclic symmetries that…
hep-th2025
Symmetries and dualities in non-supersymmetric CHL strings
Bernardo Fraiman, Héctor Parra de Freitas
We chart the classical moduli space of heterotic strings with broken supersymmetry a la Scherk-Schwarz and gauge group rank reduced by 8 in eight dimensions. This space consists of…