Hyperon-rich matter in neutron stars
Creators
- 1. The Kurchatov Institute Russian Research Center, Moscow 123182 (Russia)
- 2. The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen (Denmark)
Description
We study the equation of state of hyperon-rich matter in neutron stars using an extended relativistic mean-field model. We take special care of the recently proposed nonlinear behavior of the vector field providing a much better agreement with Dirac-Brueckner calculations. The hyperon-hyperon interaction is also implemented by introducing additional meson exchanges. With these new terms we avoid the instability found at high densities while keeping the excellent description for finite nuclear systems. We also demonstrate within the mean-field approach that the presence of hyperons inside neutron stars on one hand and the hyperon-hyperon interactions on the other hand make the onset of kaon condensation less favorable. copyright 1996 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 53
- Journal Issue
- 3
- Journal Page Range
- p. 1416-1429.
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27077583
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- DENSITY; EQUATIONS OF STATE; HYPERON-HYPERON INTERACTIONS; HYPERONS; INSTABILITY; MATTER; MEAN-FIELD THEORY; NEUTRON STARS; VECTOR FIELDS
- Descriptors DEC
- BARYON-BARYON INTERACTIONS; BARYONS; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; PARTICLE INTERACTIONS; PHYSICAL PROPERTIES; STARS; STRANGE PARTICLES