Fluxed instantons and moduli stabilization in type IIB orientifolds and F-theory
We study the superpotential induced by Euclidean D3-brane instantons carrying instanton flux, with special emphasis on its significance for the stabilization of Kähler moduli and Neveu-Schwarz axions in type IIB orientifolds. Quite generally, once a chiral observable sector is included in the compa...
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| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1 September 2011
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2011, Jahrgang: 84, Heft: 6 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.84.066001 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevD.84.066001 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.84.066001 
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| Verfasserangaben: | Thomas W. Grimm, Max Kerstan, Eran Palti, and Timo Weigand |
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| 520 | |a We study the superpotential induced by Euclidean D3-brane instantons carrying instanton flux, with special emphasis on its significance for the stabilization of Kähler moduli and Neveu-Schwarz axions in type IIB orientifolds. Quite generally, once a chiral observable sector is included in the compactification, arising on intersecting D7-branes with world-volume flux, resulting charged instanton zero modes prevent a class of instantons from participating in moduli stabilization. We show that instanton flux on Euclidean D3-branes can remove these extra zero modes and help in reinstating full moduli stabilization within a geometric regime. We comment also on the F-theoretic description of this effect of alleviating the general tension between moduli stabilization and chirality. In addition, we propose an alternative solution to this problem based on dressing the instantons with charged matter fields, which is unique to F theory and cannot be realized in the weak coupling limit. | ||
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