The MIT bag model in nuclear medium from EQMC and QHD descriptions

Recent developments in the density dependence of the MIT bag radius and parameters in nuclear matter are discussed. Starting from the MIT bag lagrangian density, the calculations are specialized for symmetric homogeneous isotropic nuclear matter. A simultaneous description of the density dependence of MIT bag model is derived from the Quantum Hadrodynamics and an extended Quark Meson Coupling model. Results are in agreement with those derived from Scaling Model.