Standard Model Compactifications of IIA Z3 x Z3 Orientifolds from Intersecting D6-branes

Christos Kokorelis

doi:10.1016/j.nuclphysb.2005.10.027

paper

Standard Model Compactifications of IIA Z3 x Z3 Orientifolds from Intersecting D6-branes

arXiv:hep-th/0412035 · doi:10.1016/j.nuclphysb.2005.10.027

Abstract

We discuss the construction of chiral four dimensional $T^{6} / (Z_{3} \times Z_{3})$ orientifold compactifications of IIA theory, using D6-branes intersecting at angles and not aligned with the orientifold O6 planes. Cancellation of mixed U(1) anomalies requires the presence of a generalized Green-Schwarz mechanism mediated by RR partners of closed string untwisted moduli. In this respect we describe the appearance of three quark and lepton family $S U (3)_{C} \times S U (2)_{L} \times U (1)_{Y}$ non-supersymmetric orientifold models with only the massless spectrum of the SM at low energy that can have either no exotics present and three families of $ν_{R}$ 's (A $^{'}$ -model class) or the massless fermion spectrum of the N=1 SM with a small number of massive non-chiral colour exotics and in one case with extra families of $ν_{R}$ 's (B $^{'}$ -model class). Moreover we discuss the construction of SU(5), flipped SU(5) and Pati-Salam $S U (4)_{c} \times S U (2)_{L} \times S U (2)_{R}$ GUTS - the latter also derived from adjoint breaking - with only the SM at low energy. Some phenomenological features of these models are also briefly discussed. All models are constructed with the Weinberg angle to be 3/8 at the string scale.

31 pages, 1 figure; v2: typos corrected, comments in the introduction added v3:35 pages, Pati-Salam G422 models & comments on split susy scenario and refs added; to appear in NPB

Standard Model Compactifications of IIA Z3 x Z3 Orientifolds from Intersecting D6-branes

Abstract

References in corpus (15)

Cited by in corpus (13)