Density Dependence of Nucleon Bag Constant, Radius and Mass in an Effective Field Theory Model of QCD

Abstract

With the global color symmetry model (GCM) being extended to finite chemical potential, the density dependence of the bag constant, the total energy and the radius of a nucleon, as well as the quark condensate in nuclear matter are investigated. A maximal nuclear matter density for the existence of the bag with three quarks confined within is obtained. The calculated results indicate that, before the maximal density is reached, the bag constant, the total energy of a nucleon and the quark condensate decrease gradually, and the radius of a nucleon increases, with the increasing of the nuclear matter density. Nevertheless no sudden change emerges. As the maximal nuclear matter density is reached, a phase transition from nucleons to quarks takes place and the chiral symmetry is restored.

Latex, 15 postscript pages, 6 postscript files, To be published in Nuclear Physics A

References in corpus (12)

• Recent Progress in Quantum Hadrodynamics
• Hadron Physics from the Global Color Model of QCD
• Thermodynamic properties of a simple, confining model
• A dynamical, confining model and hot quark stars
• Deconfinement at finite chemical potential
• Medium dependence of the bag constant in the quark-meson coupling model
• The mixed quark-gluon condensate from an effective quark-quark interaction
• Structure of Vacuum Condensates
• Chiral Phase Transition of QCD at Finite Temperature and Density from Schwinger-Dyson Equation
• Nuclear Matter Properties of the Modified Quark Meson Coupling Model
• Vacuum Condensates in the Global Color Symmetry Model
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• Revisiting the Equation of State of Hybrid Stars in the Dyson-Schwinger Equation Approach to QCD
• Pion-nucleon Sigma Term in the Global Color Model of QCD
• Wormhole Geometries Supported by Strange Quark Matter and Phantom-like Generalized Chaplygin gas within $f(Q)$ Gravity
• Reevaluation of the density dependence of nucleon radius and mass in the global color symmetry model of QCD
• Quark Condensates in Nuclear Matter in the Global Color Symmetry Model of QCD
• Temperature Dependence of the Effective Bag Constant and the Radius of a Nucleon in the Global Color Symmetry Model of QCD
• Relativistic self-energy decomposition of nuclear symmetry energy and equation of state of neutron matter within QCD sum rules
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• Constraining the Hadron-Quark Phase Transition Chemical Potential via Astronomical Observation
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