Strange matter and strange stars in a thermodynamically self-consistent perturbation model with running coupling and running strange quark mass

Abstract

A quark model with running coupling and running strange quark mass, which is thermodynamically self-consistent at both high and lower densities, is presented and applied to study properties of strange quark matter and structure of compact stars. An additional term to the thermodynamic potential density is determined by meeting the fundamental differential equation of thermodynamics. It plays an important role in comparatively lower density and ignorable at extremely high density, acting as a chemical-potential dependent bag constant. In this thermodynamically enhanced perturbative QCD model, strange quark matter still has the possibility of being absolutely stable, while the pure quark star has a sharp surface with a maximum mass as large as about 2 times the solar mass and a maximum radius of about 11 kilometers.

12 pages, 10 figures

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• Constraining quark-hadron interface tension in the multi-messenger era
• Density dependent quark mass model revisited: Thermodynamic consistency, stability windows and stellar properties
• Magnetized quark matter with a magnetic-field dependent coupling
• Electrically charged strange stars with an interacting quark matter equation of state
• Strange quark matter and quark stars with the Dyson-Schwinger quark model
• Model of hybrid star with baryonic and strange quark matter in Tolman-Kuchowicz spacetime
• Non-Newtonian gravity in strange quark stars and constraints from the observations of PSR J0740+6620 and GW170817
• Supercritically charged objects and electron-positron pair creation
• Strange Quark Stars as Probe of Dark Matter
• Cold quark matter in a quasiparticle model: thermodynamic consistency and stellar properties
• Strangelets at finite temperature in an equivparticle model
• Equation of state and hybrid star properties with the weakly interacting light U-boson in relativistic models
• Effects of the temperature and magnetic-field dependent coupling on the properties of QCD matter
• Landau levels of cold dense quark matter in a strong magnetic field
• Landau quantization and spin polarization of cold magnetized quark matter
• Strangelets formation in high energy heavy-ion collisions
• Strange Matter
• Two-flavor hybrid stars with the Dyson-Schwinger quark model
• Analysis of kinetic freeze out temperature and transverse flow velocity in nucleus-nucleus and proton-proton collisions at same center of mass energy