Discrete R-symmetries and anomaly universality in heterotic orbifolds

• Published in: The journal of high energy physics Vol. 2014; no. 2; pp. 1 - 23
• Main Authors: Bizet, Nana G. Cabo, Kobayashi, Tatsuo, Peña, Damián K. Mayorga, Parameswaran, Susha L., Schmitz, Matthias, Zavala, Ivonne
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2014; Springer Nature B.V
• Subjects: Anomalies; Classical and Quantum Gravitation; Computation; Correlation; Couplings; Elementary Particles; High energy physics; Invariants; Mathematical analysis; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Relativity Theory; Rotational; String Theory; Symmetry; Superstrings and Heterotic Strings; Discrete and Finite Symmetries; Conformal Field Models in String Theory; Anomalies in Field and String Theories
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP02(2014)098

A bstract We study discrete R -symmetries, which appear in the 4D low energy effective field theory derived from heterotic orbifold models. We derive the R -symmetries directly from the geometrical symmetries of the orbifolds. In particular, we obtain the corresponding R -charges by requiring that the couplings be invariant under these symmetries. This allows for a more general treatment than the explicit computations of correlation functions made previously by the authors, including models with discrete Wilson lines, and orbifold symmetries beyond plane-by-plane rotational invariance. The R -charges obtained in this manner differ from those derived in earlier explicit computations. We study the anomalies associated with these R -symmetries, and comment on the results.