Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines cond-mat.stat-mech
Date Mercredi 8 Avril 2020
Heure 14:30
Institut LPENS
Nom de l'orateur Piroli
Prenom de l'orateur Lorenzo
Addresse email de l'orateur
Institution de l'orateur Max-Planck-Institute of Quantum Optics
Titre Scrambling in Nonlocal Random Quantum Circuits
Résumé I will give an overview of recent results in the study of quantum chaos in random unitary quantum circuits. After providing the main motivations coming from high-energy physics, I will introduce the concepts of out-of-time ordered correlators (OTOCs) and of tripartite information as measures of scrambling of quantum information. I will then focus on the study of nonlocal random circuits, and discuss a method to obtain numerically exact results for large system sizes. I will finally present a detailed study of two particular systems: a Brownian SYK model of all-to-all-interacting Majorana fermions, and a random circuit model for black hole evaporation, focusing on the most interesting physical aspects. Talk based on: C. Sünderhauf, L. Piroli, X.-L. Qi, N. Schuch, and J. I. Cirac, J. High Energ. Phys. 38 (2019) L. Piroli, C. Sünderhauf, and X.-L. Qi, arXiv:2002.09236 (2020)
Numéro de preprint arXiv
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