Nuclear and neutron matter G-matrix calculations with a chiral effective field theory potential including effects of three-nucleon interactions

M. Kohno (河野通郎)
Phys. Rev. C 88, 064005 – Published 30 December 2013; Erratum Phys. Rev. C 96, 059903 (2017)

Abstract

The energies of symmetric nuclear matter and neutron matter are evaluated in the lowest-order Brueckner theory using a chiral effective field theory potential including effects of a three-nucleon force (3NF). The 3NF is first reduced to a density-dependent nucleon-nucleon (NN) force by folding with single-nucleon degrees of freedom in infinite matter. Adding the reduced NN force to the initial NN force and applying a partial-wave expansion, G-matrix calculations are performed in pure neutron matter as well as in symmetric nuclear matter. A saturation curve which is close to the empirical one is obtained. It is explicitly shown that the cutoff-energy dependence of the calculated energies is substantially reduced by including the 3NF. Characteristics of 3NF contributions in separate spin and isospin channels are discussed. Calculated energies of neutron matter are very similar to those employed in the literature for considering neutron star properties.

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  • Received 18 September 2013

DOI:https://doi.org/10.1103/PhysRevC.88.064005

©2013 American Physical Society

Erratum

Authors & Affiliations

M. Kohno (河野通郎)*

  • Physics Division, Kyushu Dental University, Kitakyushu 803-8580, Japan

  • *kohno@kyu-dent.ac.jp

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Issue

Vol. 88, Iss. 6 — December 2013

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