Bag model and quark star

Abstract

In this paper, incorporating the property of the vacuum negative pressure, namely, the bag constant, we presented 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 {\it et~al.}'s EOS and SQM1 model, one find that our EOS is softer than Fraga {\it et~al.}'s EOS and SQM1 model. The reason for this difference is analyzed. With these results we investigate the structure of quark star. A comparison between our model of quark star and other models is made. The obtained mass of quark star is $1.3\sim 1.66M_{\odot }$ and the radius is $9.5\sim 14Km$. One can see that our star's compactness is smaller than that of other two models.

11 pages, 4 figures

References in corpus (21)

• Neutron Star Structure and the Equation of State
• The Physics of Neutron Stars
• Dyson-Schwinger Equations and the Application to Hadronic Physics
• Strange Quark Matter and Compact Stars
• Hybrid stars that masquerade as neutron stars
• Dyson-Schwinger Equations: Density, Temperature and Continuum Strong QCD
• Dyson-Schwinger equations: a tool for hadron physics
• Hadronization in the SU(3) Nambu-Jona-Lasinio Model
• EXO 0748-676 Rules out Soft Equations of State for Neutron Star Matter
• Small, Dense Quark Stars from Perturbative QCD
• Analytic properties of the Landau gauge gluon and quark propagators
• Quark matter in compact stars?
• The Equation of State of Deconfined Matter at Finite Chemical Potential in a Quasiparticle Description
• Bare Quark Matter Surfaces of Strange Stars and $e^{+}{e}^{-}$ Emission
• Strange quark stars within the Nambu-Jona-Lasinio model
• Effect of color superconductivity on the mass and radius of a quark star
• Confinement Phenomenology in the Bethe-Salpeter Equation
• Quark stars within relativistic models
• The calculation of the equation of state of QCD at finite chemical potential and zero temperature
• The thermal evolution of nuclear matter at zero temperature and definite baryon number density in chiral perturbation theory
• The Equation of State and Quark Number Susceptibility in Hard-Dense-Loop Approximation

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• Kaon meson condensate in neutron star matter including hyperons
• Model Study of a Quark Star
• Proto-Strange Quark Star Structure
• Strange quark matter and proto-strange stars in an equivaparticle model
• Calculation of bulk viscosity of QCD at zero temperature and finite chemical potential
• Chandrasekhar limit for rotating quark stars
• Center of mass motion in bag model
• Influence of light quark loops on the Wigner phase with Dyson-Schwinger equations approach
• Kaon-meson coupling from SU(3) flavour symmetry and application to antikaon condensed dense matter in neutron star