Statut | Confirmé |
Série | RENC-THEO |
Domaines | hep-th |
Date | Jeudi 24 Janvier 2019 |
Heure | 11:40 |
Institut | LPTHE |
Salle | bibliothèque du LPTHE, tour 13-14, 4eme étage |
Nom de l'orateur | Tomasiello |
Prenom de l'orateur | Alessandro |
Addresse email de l'orateur | |
Institution de l'orateur | U. of Milano Bicocca |
Titre | De Sitter Solutions from Ten Dimensions |
Résumé | Finding de Sitter compactifications of string theory has long been a challenge. They are known to require quantum corrections, or orientifold planes, or both. Most existing models rely on effective four-dimensional actions, or work with the ten-dimensional action but involve 'smearing' the internal O-planes. After a brief review of such efforts, we present some new numerical solutions with localized and back-reacted O8-planes. While the solution is singular and strongly-coupled near one of the O8s, it exhibits the same behavior observed for such objects in flat space and in a variety of AdS solutions in various dimensions, with solid holographic cross-checks. Away from the O8s the solution can be made parametrically weakly-coupled thanks to some moduli, whose nature might however be changed by string theory corrections. |
Numéro de preprint arXiv | |
Commentaires | Attention, lieu inhabituel ! |
Fichiers attachés |
Pour obtenir l' affiche de ce séminaire : [ Postscript | PDF ]
|
[ English version ] |