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Statut |
Confirmé |
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Série |
IPHT-MAT |
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Domaines |
hep-th |
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Date |
Mardi 1 Décembre 2015 |
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Heure |
14:15 |
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Institut |
IPHT |
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Salle |
Salle Claude Itzykson, Bât. 774, Orme des Merisiers |
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Nom de l'orateur |
Alessio Marrani |
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Prenom de l'orateur |
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Addresse email de l'orateur |
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Institution de l'orateur |
Enrico Fermi Center, Roma and INFN-Univ. of Padova, Italy |
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Titre |
Freudenthal Symmetries and U-Orbits : from Groups of Type E7 to Pre-Homogeneous Vector Spaces |
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Résumé |
Freudenthal duality can be defined as an anti-involutive, non-linear map acting on symplectic spaces. It was originally introduced in four-dimensional Maxwell-Einstein theories coupled to non-linear sigma models of scalar fields. After a general introduction on some aspects of extended (super)gravity theories and the structure of their U-orbits, I will consider their U-duality Lie groups ``of type E7'', and the corresponding notion of Freudenthal duality. I will elucidate and comment on the relation between the Hessian of the black hole entropy and the pseudo-Riemannian, rigid, para-special Kaehler metric of the pre-homogeneous vector spaces associated to the U-orbits. I will conclude with some hints for further future developments. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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