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Avoiding disastrous couplings in SU(5) orientifolds

✍ Scribed by P. Anastasopoulos; G.K. Leontaris; R. Richter; A.N. Schellekens

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
154 KB
Volume
59
Category
Article
ISSN
0015-8208

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✦ Synopsis

Abstract

This proceeding is based on the paper 1010.5188 [hep‐th] where we discuss SU(5) Grand Unified Theories in the context of orientifold compactifications. Specifically, we investigate three D‐brane stack realizations of the Georgi‐Glashow model and analyze them with respect to their Yukawa couplings. We show that most/all phenomenological problems that appear in two stack models can be resolved in three stack models. We exemplify with globally consistent Georgi‐Glashow models based on RCFT that these D‐brane quivers can be indeed embedded in a global setting.

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Yukawa couplings in F-theory SU(5)
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✍ G.K. Leontaris 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 175 KB

## Abstract The fermion mass textures are discussed in the context of F‐theory SU(5) GUT. The tree‐level up, down and charged lepton Yukawa couplings are computed in terms of the integrals of overlapping wavefunctions at the intersection points of three matter curves. All remaining entries in the f