Speaker
Shonosuke Takeshita
Description
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. To avoid the proton decay constraint and a Landau pole of gauge coupling below the Planck scale, the PQ breaking scale is higher than the GUT scale.
