Effects of quark deconfinement on the maximum mass of neutron stars

Physics – Nuclear Physics

Scientific paper

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Neutron Stars, Supernovae, Nuclear Physics Aspects Of Novae, Supernovae, And Other Explosive Environments, Nuclear Matter Aspects Of Neutron Stars, Quark-Gluon Plasma

Scientific paper

We study the consequences of the hadron-quark phase transition for the values of the maximum mass of neutron stars (NS's). For the hadronic phase, we use an equation of state (EOS) derived within the Brueckner-Bethe-Goldstone formalism with realistic two-body and three-body forces. For quark matter we employ the MIT bag model with a density dependent bag parameter. We calculate the structure of NS interiors with the EOS comprising both phases, and we find that the NS's maximum masses fall in a relatively narrow interval, 1.4 Msolar <= Mmax <= 1.7 Msolar, the precise value being only weakly correlated with the value of the energy density at the assumed transition point in nearly symmetric nuclear matter.

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