Stable quantum Monte Carlo simulations for entanglement spectra of interacting fermions
Stable quantum Monte Carlo simulations for entanglement spectra of interacting fermions
We show that the two recently proposed methods to compute Renyi entanglement entropies in the realm of determinant quantum Monte Carlo methods for fermions are in principle equivalent, but differ in sampling strategies. The analogy allows us to formulate a numerically stable calculation of the entanglement spectrum at strong coupling. …