Grand Unification in the Spectral Pati-Salam Model

TL;DR

This paper investigates gauge coupling unification in the spectral Pati-Salam model derived from noncommutative geometry, analyzing various scalar scenarios and their impact on unification at one-loop level.

Contribution

It demonstrates unification of Pati-Salam gauge couplings across different scalar content scenarios within the spectral model framework.

Findings

Unification achieved for all considered scalar scenarios.

Boundary conditions set by Standard Model RG flow at symmetry-breaking scale.

Analysis performed at one-loop level for gauge couplings.

Abstract

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 scenario's 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.