Grand Unification in the Spectral Pati-Salam Model

2015, July 29
Ali H. Chamseddine, Alain Connes, Walter D. van Suijlekom
To appear in JHEP
  1507.08161.pdf

We analyze the running at one-loop of the gauge couplings in the spectral Pati-Salam model that was derived in the framework of noncommutative geometry. There are a few different scenarios for the scalar particle content which are determined by the precise form of the Dirac operator for the finite noncommutative space. We consider these different scenarios and establish for all of them unification of the Pati-Salam gauge couplings. The boundary conditions are set by the usual RG flow for the Standard Model couplings at an intermediate mass scale at which the Pati-Salam symmetry is broken.