Chiral supersymmetric models on an orientifold of Z_4 x Z_2 with intersecting D6-branes

TL;DR

This paper explores intersecting D6-branes on a specific orientifold background, successfully constructing chiral supersymmetric models with realistic particle content, including the Standard Model and right-handed neutrinos.

Contribution

It presents new supersymmetric models with chiral spectra on an orientifold of type IIA theory, including explicit constructions with three and four generations.

Findings

Two supersymmetric models with Pati-Salam gauge group are constructed.

One model reproduces the Standard Model particle content plus right-handed neutrinos.

RR tadpole cancellation and scalar potential are explicitly analyzed.

Abstract

We investigate intersecting D6-branes on an orientifold of type IIA theory in the orbifold background T^6/(Z_4 x Z_2) with the emphasis on finding chiral spectra. RR tadpole cancellation conditions and the scalar potential at disc level are computed. The general chiral spectrum is displayed, and two supersymmetric models with a Pati-Salam group are shown,one with four generations and the other one with three generations and exactly the chiral matter content of the SM plus right handed neutrinos.