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arXiv · 0707.1871

Non-perturbative Yukawa Couplings from String Instantons

Ralph Blumenhagen·Mirjam Cvetic·Dieter Lust·Robert Richter·Timo Weigand
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Abstract

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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Ralph Blumenhagen, Mirjam Cvetic, Dieter Lust, Robert Richter, Timo Weigand. 2007-07-12. Non-perturbative Yukawa Couplings from String Instantons. https://doi.org/10.1103/physrevlett.100.061602

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