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Hyperons and nuclear symmetry energy in neutron star matter

Title
Hyperons and nuclear symmetry energy in neutron star matter
Author
Keywords
HYPERONS; NEUTRON stars; MEAN field theory; PARTICLES; NUCLEAR matter; Nuclear physics
Issue Date
2011-09
Publisher
American Physical Society
Citation
Physical Review C - Nuclear Physics, Vol.84, No.3 [2011],
Abstract
In this work, masses and radii of neutron stars are considered to investigate the effect of nuclear symmetry energy to the astrophysical observables. A relativistic mean field model with density-dependent meson-baryon coupling constants is employed in describing the equation of state of dense nuclear matter, and the density dependencies of the symmetry energies are quoted from the recent phenomenological formulae obtained from the heavy ion data at subnuclear saturation densities. Since hyperons can take part in the $\beta$-equilibrium of the dense matter inside neutron stars, we include hyperons in our estimation and their roles are discussed in combination with that of the nuclear symmetry energy.
URI
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.84.035809
ISSN
1089-490X
DOI
10.1103/PhysRevC.84.035809
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