Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines hep-th
Date Jeudi 10 Fevrier 2022
Heure 14:00
Institut IHP
Salle Virtual
Nom de l'orateur Kundu
Prenom de l'orateur Sandipan
Addresse email de l'orateur
Institution de l'orateur
Titre New Bounds on Chaos and Quantum Gravity
Résumé Chaos, in quantum systems, can be diagnosed by certain out-of-time-order correlators (OTOCs) that obey the chaos bound of Maldacena, Shenker, and Stanford (MSS). In this talk, I will show that this class of OTOCs must satisfy an infinite set of constraints, generalizing the MSS bound. Theories of quantum gravity and their holographic duals are known to be maximally chaotic, saturating the MSS bound at early times. However, these new bounds imply that the MSS bound cannot be exactly saturated over any duration of time, however short. On the other hand, I will discuss a unique analytic extension of the maximal chaos that saturates all the new chaos bounds. This extremal OTOC has the feature that information of the initial perturbation is recovered at very late times. I will argue that all analytic completions of maximal chaos must be small deformations of extremal chaos.
Numéro de preprint arXiv
Commentaires pwd=1234
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