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arXiv · 0710.5384

Structure of hybrid protoneutron stars within the Nambu--Jona-Lasinio model

G. F. Burgio·S. Plumari
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Abstract

We investigate the structure of protoneutron stars (PNS) formed by hadronic and quark matter in $β$-equilibrium described by appropriate equations of state (EOS). For the hadronic matter, we use a finite temperature EOS based on the Brueckner-Bethe-Goldstone many-body theory, with realistic two- and three-body forces. For the quark sector, we employ the Nambu--Jona-Lasinio model. We find that the maximum allowed masses are comprised in a narrow range around 1.8 solar masses, with a slight dependence on the temperature. Metastable hybrid protoneutron stars are not found.

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G. F. Burgio, S. Plumari. 2008-03-26. Structure of hybrid protoneutron stars within the Nambu--Jona-Lasinio model. https://doi.org/10.1103/physrevd.77.085022

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