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arxiv: 0707.1871 · v1 · submitted 2007-07-12 · ✦ hep-th · hep-ph

Non-perturbative Yukawa Couplings from String Instantons

Ralph Blumenhagen , Mirjam Cvetic , Dieter Lust , Robert Richter , Timo Weigand This is my paper
classification ✦ hep-th hep-ph
keywords couplingsdiscussgenerationinstantonsmatternon-perturbativeperturbativelytype
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Non-perturbative D-brane instantons can generate perturbatively absent though phenomenologically relevant couplings for Type II orientifold compactifications with D-branes. We discuss the generation of the perturbatively vanishing SU(5) GUT Yukawa coupling of type 10 10 5_H. Moreover, for a simple globally consistent intersecting D6-brane model, we discuss the generation of mass terms for matter fields. This can serve as a mechanism for decoupling exotic matter.

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