Improved quark mass density- dependent model with quark-sigma meson and quark-omega meson couplings

Abstract

An improved quark mass density- dependent model with the non-linear scalar sigma field and the $\omega$-meson field is presented. We show that the present model can describe saturation properties, the equation of state, the compressibility and the effective nuclear mass of nuclear matter under mean field approximation successfully. The comparison of the present model and the quark-meson coupling model is addressed.

15 pages, 6 figures

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