Nonperturbative Yukawa couplings from string instantons
Nonperturbative 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 5H⟩. Moreover, for a simple g...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
15 February 2008
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| In: |
Physical review letters
Year: 2008, Volume: 100, Issue: 6 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.100.061602 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.100.061602 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.100.061602 
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| Author Notes: | Ralph Blumenhagen, Mirjam Cvetič, Dieter Lüst, Robert Richter, and Timo Weigand |
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| 520 | |a Nonperturbative 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 5H⟩. 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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