Quantum entanglement of the Sachdev-Ye-Kitaev models
Quantum entanglement of the Sachdev-Ye-Kitaev models
The Sachdev-Ye-Kitaev (SYK) model is a quantum-mechanical model of fermions interacting with $q$-body random couplings. For $q=2$, it describes free particles and is nonchaotic in the many-body sense, while for $q>2$ it is strongly interacting and exhibits many-body chaos. In this work we study the entanglement entropy (EE) of the …