The Final Model Building for the Supersymmetric Pati-Salam Models from Intersecting D6-Branes

Abstract

All the possible three-family $\mathcal{N}=1$ supersymmetric Pati-Salam models constructed with intersecting D6-branes from Type IIA orientifolds on $T^6/({\mathbb{Z}}_2\times {\mathbb{Z}}_2)$ are recently presented in arXiv: 2112.09632. Taking models with largest wrapping number $5$ and approximate gauge coupling unification at GUT scale as examples, we show string scale gauge coupling unification can be realized through two-loop renormalization group equation running by introducing seven pairs of vector-like particles from $\mathcal{N}=2$ sector. The number of these introduced vector-like particles are fully determined by the brane intersection numbers while there are two D6-brane parallel to each other along one two-torus. We expect this will solve the gauge coupling unification problem in the generic intersecting brane worlds by introducing vector-like particles that naturally included in the $\mathcal{N}=2$ sector.

arXiv comment3 figures

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