Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines hep-th
Date Jeudi 15 Juin 2017
Heure 10:00
Institut IHP
Salle 314
Nom de l'orateur Hertog
Prenom de l'orateur Thomas
Addresse email de l'orateur
Institution de l'orateur University of Leuven
Titre A Smooth Exit from Eternal Inflation?
Résumé I discuss recent work with Bobev, Conti and Vreys in which we evaluate the partition function of the free O(N) vector model on a two-parameter family of squashed three spheres and in the presence of a mass deformation. The thermodynamics of this system turns out to be qualitatively similar to that of generalisations of the AdS Taub-NUT and Taub-Bolt solutions of Einstein gravity coupled to a scalar field. Recent formulations of dS/CFT enable one to interpret this partition function as the Hartle-Hawking wave function in a minisuperspace model consisting of anisotropic deformations of inflationary universes. I derive the resulting holographic measure in this model, which has a regime of eternal inflation. This measure indicates that the exit surface from scalar field driven eternal inflation is much smoother than what conventional wisdom about eternal inflation says.
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