Modified MIT Bag Models—part II: QCD phase diagram and hot quark stars
Luiz L Lopes, Carline Biesdorf, K D Marquez, Débora P Menezes
Abstract
Abstract In the present work we use the modified versions of the MIT bag model, on which both a vector field and a self-interacting term are introduced, to obtain hot quark matter and to investigate the QCD phase diagram. We first analyze two-flavored quark matter constrained to both the freeze-out and the liquid-gas phase transition at the hadronic phase. Later, three-flavored quark matter subject to β equilibrium and charge neutrality is used to compute quark star macroscopic properties, which are confronted with recent observational massive and canonical star radius results. Finally, a comparison with QCD phase diagrams obtained from the Nambu-Jona-Lasinio model is performed.
Topics & Concepts
PhysicsStrange matterQuark starParticle physicsQuantum chromodynamicsQCD matterQuarkHadronPhase transitionPhase diagramCharge (physics)Star (game theory)Field (mathematics)StarsQuark–gluon plasmaColor superconductivityPhase (matter)Nuclear physicsQuark modelUp quarkRADIUSTop quarkCharge radiusDown quarkQuantum electrodynamicsPulsars and Gravitational Waves ResearchHigh-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle Interactions