Eur. Phys. J. A (2003) 17: 463-467
https://doi.org/10.1140/epja/i2002-10193-6

Original Paper

GFMC studies of low-density neutron matter

Theoretical Division, Los Alamos National Lab, NM 87545, Los Alamos, USA

^* e-mail: carlson@lanl.gov

Abstract

Green's function Monte Carlo methods are used to provide benchmarks for studies of low-density neutron matter. The zero-temperature equation of state and pair correlation functions are studied for the AV8$^\prime$ NN interaction model, and for an idealized model comprised of neutrons with a short-range interaction and an arbitrarily large (negative) scattering length. For this idealized problem the equation of state is a constant multiplied by the Fermi-gas energy, this constant is found to be nearly 1/2. Similar ratios are found for realistic NN interactions.