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Statut |
Confirmé |
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Série |
RENC-THEO |
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Domaines |
hep-th |
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Date |
Jeudi 24 Janvier 2019 |
|
Heure |
11:40 |
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Institut |
LPTHE |
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Salle |
bibliothèque du LPTHE, tour 13-14, 4eme étage |
|
Nom de l'orateur |
Tomasiello |
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Prenom de l'orateur |
Alessandro |
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Addresse email de l'orateur |
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Institution de l'orateur |
U. of Milano Bicocca |
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Titre |
De Sitter Solutions from Ten Dimensions |
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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. |
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Numéro de preprint arXiv |
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Commentaires |
Attention, lieu inhabituel ! |
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Fichiers attachés |
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