Equation of state for dense nucleon matter

Phys. Rev. C 38, 1010 – Published 1 August 1988
R. B. Wiringa, V. Fiks, and A. Fabrocini

Abstract

We report microscopic calculations of the equation of state for dense nuclear and neutron matter. The calculations are performed for five Hamiltonians: the Argonne v14 and Urbana v14 two-nucleon potentials, both alone and with the Urbana VII three-nucleon potential, and the density-dependent Urbana v14 plus three-nucleon interaction model of Lagaris, Friedman, and Pandharipande. The beta-stable equation of state and neutron star structure are also calculated for three of the models. The models with the three-nucleon potential bracket the density-dependent model and are significantly stiffer than those with an unmodified two-nucleon potential only. The Argonne v14 plus Urbana VII Hamiltonian produces a softening in the neutron matter equation of state localized around twice nuclear matter density which may indicate a neutral pion condensate.

DOI: http://dx.doi.org/10.1103/PhysRevC.38.1010

  • Received 17 March 1988
  • Published in the issue dated August 1988

© 1988 The American Physical Society

Authors & Affiliations

R. B. Wiringa and V. Fiks

  • Physics Division, Argonne National Laboratory, Argonne, Illinois 60439

A. Fabrocini

  • Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
  • Dipartimento di Fisica, Universita di Pisa, I-56100 Pisa, Italy

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