| Domaine : |
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Physique/Physique des Hautes Energies - Théorie
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| Titre : |
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Fivebrane instantons, topological wave functions and hypermultiplet moduli spaces |
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| Auteur(s) : |
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Sergey Alexandrov ( )1, Daniel Persson2, Boris Pioline3 |
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| Laboratoire : |
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| Résumé : |
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We investigate quantum corrections to the hypermultiplet moduli space M in Calabi-Yau compactifications of type II string theories, with particular emphasis on instanton effects from Euclidean NS5-branes. Based on the consistency of D- and NS5-instanton corrections, we determine the topology of the hypermultiplet moduli space at fixed string coupling and Calabi-Yau metric, as previewed in arXiv:1009.3026. On the type IIB side, we compute corrections from (p,k)-fivebrane instantons to the metric on M (specifically, the correction to the complex contact structure on its twistor space Z) by applying S-duality to the D-instanton sum. For fixed fivebrane charge k, the corrections can be written as a non-Gaussian theta series, whose summand for k=1 reduces to the topological A-model amplitude. By mirror symmetry, instanton corrections induced from the chiral type IIA NS5-brane are similarly governed by the wave function of the topological B-model. In the course of this investigation we clarify charge quantization for coherent sheaves and find hitherto unnoticed corrections to the Heisenberg, monodromy and S-duality actions on M, as well as to the mirror map for Ramond-Ramond fields and D-brane charges. |
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Langue du texte
intégral : |
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Anglais |
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Date de production,
écriture : |
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27/10/2010 |
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| Journal : |
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| Journal of High Energy Physics |
| Publisher |
Institute of Physics (IOP) |
| ISSN |
1126-6708 (eISSN : 1029-8479) |
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| Audience : |
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internationale |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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| Date de publication : |
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23/03/2011 |
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| Volume : |
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2011 |
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| Numéro : |
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3 |
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| Page, identifiant, ... : |
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111 |
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| Commentaire : |
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73 pages |
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| Référence interne : |
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LPTA:10-077 |
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