Statut | Confirmé |
Série | RENC-THEO |
Domaines | hep-th |
Date | Jeudi 12 Mai 2016 |
Heure | 10:00 |
Institut | IHP |
Salle | Amphi Darboux |
Nom de l'orateur | Hohenegger |
Prenom de l'orateur | Stefan |
Addresse email de l'orateur | |
Institution de l'orateur | IPN Lyon |
Titre | M-strings and Little Strings |
Résumé | I study BPS excitations in M5-M2-brane configurations with a compact transverse direction, which are also relevant for type IIa and IIb little string theories. These configurations are dual to a class of toric elliptically fibered Calabi-Yau manifolds $X_N$ with manifest $SL(2,\mathbb{Z})\times SL(2,\mathbb{Z})$ modular symmetry. They admit two dual gauge theory descriptions. For both, the non-perturbative partition function can be written as an expansion of the topological string partition function of $X_N$ with respect to either of the two modular parameters. I analyse the resulting BPS counting functions in detail and unravel a number of remarkable relations. In particular, I find that for certain M2-brane configurations, the free energies in the two dual theories agree with each other. This points to a new correspondence between instanton and monopole configurations and is also a manifestation of T-duality between type IIa and IIb little string theories. Finally, I briefly comment on a generalisation of these results to orbifolds of little string theories. |
Numéro de preprint arXiv | |
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