Equation of state for dense nucleon matter

Journal Article · Mon Aug 01 00:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.1010· OSTI ID:6853071

Wiringa, R B; Fiks, V; Fabrocini, A

We report microscopic calculations of the equation of state for dense nuclear and neutron matter. The calculations are performed for five Hamiltonians: the Argonne v/sub 14/ and Urbana v/sub 14/ two-nucleon potentials, both alone and with the Urbana VII three-nucleon potential, and the density-dependent Urbana v/sub 14/ 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 v/sub 14/ 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.

• Research Organization: Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 6853071
• Journal Information: Phys. Rev. C; (United States), Vol. 38:2
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
NEUTRON STARS
EQUATIONS OF STATE
NUCLEAR MATTER
HAMILTONIANS
HEAVY ION REACTIONS
PION CONDENSATION
POTENTIALS
SUPERNOVAE
TENSOR FORCES
VARIATIONAL METHODS
CHARGED-PARTICLE REACTIONS
EQUATIONS
ERUPTIVE VARIABLE STARS
MATHEMATICAL OPERATORS
MATTER
NUCLEAR REACTIONS
QUANTUM OPERATORS
STARS
VARIABLE STARS
653002* - Nuclear Theory- Nuclear Matter