2012/07/17 by Jeremy McMinis, Norm M. Tubman · 1 citation
Physics and Astronomy · #cond-mat.str-el #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1103/physrevb.87.081108
published as Phys. Rev. B 87, 081108(R) (2013) · 7 pages, 7 figures
arxiv created 2012/07/17 · arxiv updated 2013/03/05
We perform quantum Monte Carlo calculations to determine how the Renyi entropies, Sn, of the interacting Fermi liquid depend on Renyi order, n, and scale as a function of system size, L. Using the swap operator and an accurate Slater-Jastrow wave function, we compute Renyi entropies for spinless fermions interacting via the Coulomb and modified Pöschl-Teller potentials across a range of correlation strengths. Our results show that interactions increase the Renyi entropies and increase the prefactor of their scaling laws. The relationships between Renyi entropies of different order n are also modified. Additionally, we investigate the effect of the swap operator on the Fermi liquid wave function to determine the source of the Llog L scaling form.