Quantum chaos in the Brownian SYK model with large finite $N$: OTOCs and tripartite information

Christoph Sünderhauf, Lorenzo Piroli, Xiao-Liang Qi +2

We consider the Brownian SYK model of $N$ interacting Majorana fermions, with random couplings that are taken to vary independently at each time. We study the out-of-time-ordered c…