Abstract
A self-consistent description of the MIT bag parameters as functions of the nuclear matter density is presented. The subnuclear degrees of freedom are treated in the Quark-Meson Coupling Model, considering the equilibrium conditions for the bag in the nuclear medium. The hadronic interaction is described in the framework of the quantum field theory of hadrons through several models. We have obtained the behavior of the bag radius and the bag parameters B and z 0, taking their derivatives with respect to the mean field value of the scalar meson as free parameters. A discussion on the variation range of these derivatives is given.
Highlights
A self-consistent description of the MIT bag parameters as functions of the nuclear matter density is presented
Different aspects of the phenomenology of nuclear matter and finite nuclei have been studied in the framework of the so-called Quantum Hadrodynamics (QHD) with successful results [9]
We are interested in the implications that the QHD description have for a picture which deals with subnuclear degrees of freedom
Summary
A self-consistent description of the MIT bag parameters as functions of the nuclear matter density is presented. It is usual to determine the bag parameters at zero baryon density to reproduce the experimental nucleon mass Mb = 939 MeV. In [5] the bag parameters B and z0 are constants, it was found a relative change of 1% in the radius at the saturation density (ρ = 0.15 fm−3) as compared with its value at zero baryon density.
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