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Hyperon-hyperon interactions and properties of neutron matter

I. Vidaña·A. Polls·A. Ramos·L. Engvik·M. Hjorth-Jensen
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Abstract

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 $Σ^-$ and $Λ$. The corresponding equations of state are then used to compute properties of neutron stars such as masses and radii.

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I. Vidaña, A. Polls, A. Ramos, L. Engvik, M. Hjorth-Jensen. 2000-04-12. Hyperon-hyperon interactions and properties of neutron matter. https://doi.org/10.1103/physrevc.62.035801

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