Connecting the von Neumann and Renyi entropies for Fermions

Published 4 May 2012 in quant-ph | (1205.0945v1)

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.

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