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arXiv · 1203.5789

Non-Universal Anomalies in Heterotic String Constructions

Christoph Lüdeling·Fabian Ruehle·Clemens Wieck
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Abstract

We investigate anomalies on heterotic orbifolds and their blowups. We give a simple example of an orbifold blowup which contains anomalous U(1) symmetries that are canceled by axions which couple non-universally to the different gauge groups, thus clarifying some confusion which recently arose in the literature concerning anomaly universality. We argue that non-universal axionic couplings are the general case, and that the couplings are only universal in the case of orbifolds. We comment on the consequences of this non-universality for discrete R symmetries. We furthermore investigate the origin of discrete (R and non-R) symmetries on smooth Calabi-Yau manifolds.

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Christoph Lüdeling, Fabian Ruehle, Clemens Wieck. 2012-11-16. Non-Universal Anomalies in Heterotic String Constructions. https://doi.org/10.1103/physrevd.85.106010

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