(Non-)Abelian discrete anomalies

Abstract

We derive anomaly constraints for Abelian and non-Abelian discrete symmetries using the path integral approach. We survey anomalies of discrete symmetries in heterotic orbifolds and find a new relation between such anomalies and the so-called `anomalous' U(1).Comment: 32 pages, one figure; v2: matches version published in NP

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