2000 character limit reached
QCD axion from chiral gauge theories (2508.21820v1)
Published 29 Aug 2025 in hep-ph and hep-th
Abstract: We present models of axion based on supersymmetric chiral gauge theories. In these models, the PQ symmetry is spontaneously broken by the non-perturbative dynamics of chiral gauge theory. Thanks to supersymmetry, IR dynamics of the models are calculable. We also present an example of a QCD axion model that is compatible with SU(5) grand unification. We find that the PQ breaking scale should be higher than $\sim 10{13}~{\rm GeV}$ for the successful GUT unification. In addition, the PQ breaking scale should be higher than the GUT scale to avoid a Landau pole of gauge coupling below the Planck scale.
Collections
Sign up for free to add this paper to one or more collections.
Paper Prompts
Sign up for free to create and run prompts on this paper using GPT-5.
