Speaker
Description
In this work, we analyze the internal structure of neutron stars using hybrid equations of state that combine hadronic and quark degrees of free-dom within a unified framework. The stellar crust is described through the Togashi model, which ensures thermodynamic consistency across the nuclear saturation regime, while the nucleonic region follows the Prakash formulation for 3-stable matter. The deconfined quark phase is modeled with the three-flavor Nambu-Jona-Lasinio (NJL) approach, considering. variations in the vector and diquark couplings (gv/G, H/G) to system-atically study their influence on macroscopic properties. By numerically solving the Tolman-Oppenheimer-Volkoff equations for each parameter set, we obtain the mass-radius relations, crust thickness, and quark core radius. The results identify stable hybrid configurations consistent with current observational constraints on neutron star masses and radii, contributing to the understanding of phase transitions in dense QCD matter and the emergence of quark cores in compact stars.
