Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Série STR-LPT-ENS-HE
Domaines hep-th
Date Mardi 6 Fevrier 2018
Heure 11:30
Institut LPTENS
Salle LPTENS library
Nom de l'orateur Oblak
Prenom de l'orateur Blagoje
Addresse email de l'orateur
Institution de l'orateur ETH
Titre Berry Phases of Boundary Gravitons
Résumé This talk is devoted to Berry phases that appear in unitary representations of asymptotic symmetry groups in general relativity. These phases arise when a coherent state is acted upon by symmetry transformations that trace a closed path in the group manifold, and they can be evaluated exactly even when the group is infinite-dimensional. We apply these ideas to the Virasoro and BMS groups; seeing their representations as particles dressed with boundary gravitons, the associated Berry phases generalize Thomas precession and provide, in principle, observable signatures of asymptotic symmetries.
Numéro de preprint arXiv
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