Entanglement entropy and its quench dynamics for pure states of the Sachdev-Ye-Kitaev model

P Zhang - Journal of High Energy Physics, 2020 - Springer
A bstract Sachdev-Ye-Kitaev (SYK) is a concrete solvable model with non-Fermi liquid
behavior and maximal chaos. In this work, we study the entanglement Rényi entropy for the …

Entanglement entropy of fermions from Wigner functions: Excited states and open quantum systems

S Moitra, R Sensarma - Physical Review B, 2020 - APS
We formulate a new “Wigner characteristics”-based method to calculate entanglement
entropies of subsystems of Fermions using Keldysh field theory. This bypasses the …