Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-11-18
Physics
Nuclear Physics
Nuclear Theory
12 pages, 12 figures, RevTeX4; summary and conclusions are strengthened, to appear in PRC
Scientific paper
By employing a recently constructed hyperon-nucleon potential the equation of state of \beta-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.
Djapo Haris
Schaefer Bernd-Jochen
Wambach Jochen
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