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Statut Confirmé
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 !
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