2019/12/25 by Li, Tianjun, Mansha, Adeel, Sun, Rui · 1 citation
#FOS: Physical sciences #High Energy Physics - Theory (hep-th)
paper · doi:10.48550/arxiv.1912.11633
Following the scanning methods of arXiv:1910.04530, we for the first time systematically construct the N=1 supersymmetric SU(12)C× SU(2)L× SU(2)R models, SU(4)C× SU(6)L× SU(2)R models, and SU(4)C× SU(2)L× SU(6)R models from the Type IIA orientifolds on \bf T6/(\mathbb Z2× \mathbb Z2) with intersecting D6-branes. These gauge symmetries can be broken down to the Pati-Salam gauge symmetry SU(4)C× SU(2)L × SU(2)R via three SU(12)C/SU(6)L/SU(6)R adjoint representation Higgs fields, and further down to the Standard Model (SM) via the D-brane splitting and Higgs mechanism. Also, we obtain three families of the SM fermions, and have the left-handed and right-handed three-family SM fermion unification in the SU(12)C× SU(2)L× SU(2)R models, the left-handed three-family SM fermion unification in the SU(4)C× SU(6)L× SU(2)R models, and the right-handed three-family SM fermion unification in the SU(4)C× SU(2)L× SU(6)R models. Moreover, the SU(4)C× SU(6)L× SU(2)R models and SU(4)C× SU(2)L× SU(6)R models are related by the left and right gauge symmetry exchanging, as well as a variation of type II T-duality. Furthermore, the hidden sector contains USp(n) branes, which are parallel with the orientifold planes or their Z2 images and might break the supersymmetry via gaugino condensations.