Nuclear Symmetry Energy and Hyperonic Stars in the QMC Model

The nuclear symmetry energy, together with the other saturation properties of symmetric matter, plays an important role in low energy structure terrestrial systems, as well astrophysical objects. In particular, its density dependence, both sub- and supra-saturation regions high matter neutron stars, is utmost significance has been a subject active research for decades, usually within mean-field framework. We report results obtained using latest version Quark-Meson-Coupling Model (QMC-A) just three variable parameters, baryon-meson coupling constants free space. It shown that these parameters can be determined directly (NM) at saturation; two (SNM), baryon number per particle, coefficient asymmetric (ANM). effects uncertainties propagation through calculation dense hyperonic cold stars are demonstrated. This approach leads to new limits on NM QMC . results, which exploit unique features model, discussed future prospects outlined.