Hyperon-hyperon interactions and properties of neutron star matter

We present results from Brueckner-Hartree-Fock calculatons for beta stable neutron star matter with nucleonic and hyperonic degress degrees of freedom, employing the most recent parametrizations of the baryon-baryon interaction of the Nijmegen group. It is found that the only strange baryons emergin in beta stable matter up to total barionic densities of 1.2 fm^-3 are

\Sigma^-

and

\Lambda

. The corresponding equations of state are then used to compute properties of neutron stars such as masses and radii.

astrophysics
n: matter
hyperon hyperon: interaction
baryon baryon: potential
baryon: octet
potential: chemical
thermodynamics
baryon: density
numerical calculations

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Figures(0)

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