Status: Bibliographieeintrag
Standort: ---
Exemplare:
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| Online-Ressource |
Verfasst von: | Cvetič, Mirjam [VerfasserIn]  |
| Richter, Robert [VerfasserIn]  |
| Weigand, Timo [VerfasserIn]  |
Titel: | Computation of D-brane instanton induced superpotential couplings |
Titelzusatz: | Majorana masses from string theory |
Verf.angabe: | Mirjam Cvetic, Robert Richter and Timo Weigand |
Fussnoten: | Gesehen am 09.01.2018 |
Titel Quelle: | Enthalten in: De.arxiv.org |
Jahr Quelle: | 2007 |
Band/Heft Quelle: | (2007) Artikel-Nummer 0703028, 33 Seiten |
Abstract: | We perform a detailed conformal field theory analysis of D2-brane instanton effects in four-dimensional type IIA string vacua with intersecting D6-branes. In particular, we explicitly compute instanton induced fermion two-point couplings which play the role of perturbatively forbidden Majorana mass terms for right-handed neutrinos or MSSM mu-terms. These results can readily be extended to higher-dimensional operators. In concrete realizations of such non-perturbative effects, the Euclidean D2-brane has to wrap a rigid, supersymmetric cycle with strong constraints on the zero mode structure. Their implications for Type IIA compactifications on the T^6/(Z_2 x Z_2) orientifold with discrete torsion are analyzed. We also construct a local supersymmetric GUT-like model allowing for a class of Euclidean D2-branes whose fermionic zero modes meet all the constraints for generating Majorana masses in the phenomenologically allowed regime. Together with perturbatively realized Dirac masses, these non-perturbative couplings give rise to the see-saw mechanism. |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Kostenfrei: Verlag: http://arxiv.org/abs/hep-th/0703028 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1566966906 |
Verknüpfungen: | → Sammelwerk |
Computation of D-brane instanton induced superpotential couplings / Cvetič, Mirjam [VerfasserIn] (Online-Ressource)
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