Connecting the von Neumann and Renyi entropies for Fermions
arXiv:1205.0945 · doi:10.1088/1751-8113/45/38/385003
Abstract
We explore the relation between the von Neumann entropy and the Renyi entropies of integer orders for shift-invariant quasi-free Fermionic lattice systems. We investigate approximating the von Neumann entropy by a combination of integer-order Renyi entropies and give an estimate for the quality of such an approximation.
15 pages, 3 figures