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arXiv · 0811.2939

On the appearance of hyperons in neutron stars

Haris Djapo·Bernd-Jochen Schaefer·Jochen Wambach
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Abstract

By employing a recently constructed hyperon-nucleon potential the equation of state of β-equilibrated and charge neutral nucleonic matter is calculated. The hyperon-nucleon potential is a low-momentum potential which is obtained within a renormalization group framework. Based on the Hartree-Fock approximation at zero temperature the densities at which hyperons appear in neutron stars are estimated. For several different bare hyperon-nucleon potentials and a wide range of nuclear matter parameters it is found that hyperons in neutron stars are always present. These findings have profound consequences for the mass and radius of neutron stars.

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Haris Djapo, Bernd-Jochen Schaefer, Jochen Wambach. 2010-02-08. On the appearance of hyperons in neutron stars. https://doi.org/10.1103/physrevc.81.035803

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