Statut | Confirmé |
Série | STR-LPT-ENS-HE |
Domaines | hep-th |
Date | Mardi 16 Janvier 2018 |
Heure | 11:30 |
Institut | LPTENS |
Salle | LPTENS library |
Nom de l'orateur | Vegh |
Prenom de l'orateur | David |
Addresse email de l'orateur | |
Institution de l'orateur | Queen Mary University of London |
Titre | Chaos and integrability: strings in AdS |
Résumé | In this talk I present three topics. In the first part, I talk about the butterfly effect and the role of out-of-time-order correlators in diagnosing chaos. Maldacena, Shenker, and Stanford discovered a sharp bound on the rate of growth of chaos in thermal quantum systems. This is saturated by black holes in AdS/CFT. I show that (perhaps contrary to some expectations) there are maximally chaotic quantum systems that do not contain gravity. In the second part, I consider integrable string motion and describe a new discrete way of computing the time-evolution. In the third part, I study pair-production of cusps on a string. Initially, the static string stretches between two points on the boundary. Perturbing one of the endpoints creates a large propagating wave. The non-linear time-evolution produces energy cascades which result in the creation of cusps on the string. These correspond to singular solitons in the underlying generalized sinh-Gordon theory. |
Numéro de preprint arXiv | |
Commentaires | |
Fichiers attachés |
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