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29 March 2024
 
  » arxiv » 1308.5669

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Discrete R-symmetries and Anomaly Universality in Heterotic Orbifolds
Nana Geraldine Cabo Bizet ; Tatsuo Kobayashi ; Damian Kaloni Mayorga Pena ; Susha L. Parameswaran ; Matthias Schmitz ; Ivonne Zavala ;
Date 26 Aug 2013
AbstractWe study discrete R-symmetries, which appear in 4D low energy effective field theory derived from hetetoric orbifold models. We derive the R-symmetries directly from geometrical symmetries of 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. Surprisingly, for the cases covered by earlier explicit computations, the R-charges differ from the previous result. We study the anomalies associated with these R-symmetries, and comment on the results.
Source arXiv, 1308.5669
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