2010/08/30 by Hua Li, Luo Xin-Lian, Xin-Lian Luo +1 · 26 citations
Physics and Astronomy · #Astrophysics #Equation of state #High-Energy Particle Collisions Research #Particle physics #Physics #Pulsars and Gravitational Waves Research #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Quark star #RADIUS #Star (game theory) #Strange matter #Thermodynamics #Zero (linguistics) #Zero temperature #astro-ph.SR #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.82.065017
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 82(6) (American Physical Society) · 11 pages, 4 figures
arxiv created 2010/08/30 · openalex publication_date 2010/09/21 · arxiv updated 2014/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this paper, incorporating the property of the vacuum negative pressure, namely, the bag constant, we present a new model of the equation of state (EOS) of quark matter at finite chemical potential and zero temperature. By comparing our EOS with Fraga et al.'s EOS and SQM1 model, one finds that our EOS is softer than Fraga et al.'s EOS and SQM1 model. The reason for this difference is analyzed. With these results we investigate the structure of a quark star. A comparison between our model of the quark star and other models is made. The obtained mass of the quark star is 1.3\ensuremath∼1.66M_\ensuremath\bigodot and the radius is 9.5\ensuremath∼14 Km. One can see that our star's compactness is smaller than that of the other two models.