Entanglement Spectra of Interacting Fermions in Quantum Monte Carlo Simulations
arXiv:1311.5851 · doi:10.1103/PhysRevB.89.125121
Abstract
In a recent article T. Grover [Phys. Rev. Lett. 111, 130402 (2013)] introduced a simple method to compute Renyi entanglement entropies in the realm of the auxiliary field quantum Monte Carlo algorithm. Here, we further develop this approach and provide a stabilization scheme to compute higher order Renyi entropies and an extension to access the entanglement spectrum. The method is tested on systems of correlated topological insulators.
7+ pages, 5 figures