2011/09/17 by Guo-yun Shao, G. Y. Shao · 48 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics #Condensed matter physics #Gamma-ray bursts and supernovae #Hadron #High-pressure geophysics and materials #Neutron star #Nuclear matter #Nuclear physics #Nucleon #Particle physics #Phase transition #Physics #Pulsars and Gravitational Waves Research #Quantum chromodynamics #Quark #Strange matter #nucl-th
paper · pdf · doi:10.1016/j.physletb.2011.09.030
published in Physics Letters B 704(4), 343-346 (Elsevier BV) · Accepted/to be published in Physics Letter
openalex publication_date 2011/09/17 · arxiv created 2011/09/20 · arxiv updated 2011/10/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The Poyakov–Nambu–Jona-Lasinio (PNJL) model was developed recently, which includes both the chiral dynamics and (de)confinement effect and gives a good description of lattice QCD data. In this study we use the PNJL model to describe the quark phase, and first use it to study the evolution of proto-neutron star (PNS) with a hadron–quark phase transition. Along the line of a PNS evolution, we take several snapshots of PNS profiles, presenting the fractions of different species, the equations of state (EOS), and the mass–radius relations at different stages. The calculation shows the mixed phase may exist during the whole evolving process, and the onset density of quark phase decreases with the radiation of neutrinos in the heating stage. In the cooling stage, the EOS of the mixed phase softens and the center density increases. In this process a part of nuclear matter transforms to quark matter, which may lead to a PNS collapsing into a black hole.