Informal seminar with Lorenzo Piroli

Scrambling and Chaos in Nonlocal Random Quantum Circuits

Scrambling and Chaos in Nonlocal Random Quantum Circuits

I will give an overview of recent results in the study of quantum chaos in non-local random unitary quantum circuits. After providing some motivations from high-energy and many-body physics, I will introduce the concepts of out-of-time ordered correlators (OTOCs) and of tripartite information as measures of scrambling and chaos. 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 their most interesting physical aspects.

Zoom Details:

https://istaustria.zoom.us/j/91578921754?pwd=dWRJcGhwSHdLMklLQ0pCYnVWYjFZdz09

Meeting ID: 915 7892 1754
Passcode: 078930