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

Abstract

We investigate the structure of protoneutron stars (PNS) formed by hadronic and quark matter in $\beta$-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.

arXiv comment7 pages, 6 figures, revised version accepted for publication in Phys. Rev. D

References in corpus (21)

• An accurate nucleon-nucleon potential with charge-independence breaking
• NJL-model analysis of dense quark matter
• Composition and Structure of Protoneutron Stars
• Evolution of Protoneutron Stars
• Black Holes
• Hadronization in the SU(3) Nambu-Jona-Lasinio Model
• Hyperon stars in the Brueckner-Bethe-Goldstone theory
• The hadron-quark phase transition in dense matter and neutron stars
• Neutron stars and the transition to color-superconducting quark matter
• Evolution of Proto-Neutron Stars with Quarks
• Quark-Hadron Phase Transitions in Young and Old Neutron Stars
• Maximum mass of neutron stars with a quark core
• Hybrid protoneutron stars with the MIT bag model
• Quark stars within relativistic models
• Warm stellar matter with deconfinement: application to compact stars
• Charge screening effect in the hadron-quark mixed phase
• Evolutionary sequences of rotating protoneutron stars
• Quark matter in neutron stars within the Nambu - Jona-Lasinio model and confinement
• Warm stellar matter with neutrino trapping
• Protoneutron stars within the Brueckner-Bethe-Goldstone theory
• Limiting temperature from microscopic equation of state

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• Symmetry Energy Effects on the Mixed Hadron-Quark Phase at High Baryon Density
• Hot hadron-quark mixed phase including hyperons
• Nucleation rate of color superconducting droplets in protoneutron stars
• Warm asymmetric quark matter and proto-quark stars within the confined-isospin-density-dependent mass model
• Nuclear Matter and Nuclear Dynamics
• Phases of Hadron-Quark Matter in (Proto) Neutron Stars
• Characterizing the quark-hadron mixed phase in compact star cores : sensitivity to nuclear saturation and quark-model parameters at finite-temperature