info:eu-repo/semantics/article
Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model
Fecha
2019-03-22Registro en:
Ranea Sandoval, Ignacio Francisco; Orsaria, Milva Gabriela; Malfatti, Germán; Daniela, Curin; Mariani, Mauro; et al.; Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model; Multidisciplinary Digital Publishing Institute; Symmetry; 11; 3; 22-3-2019; 1-18
2073-8994
CONICET Digital
CONICET
Autor
Ranea Sandoval, Ignacio Francisco
Orsaria, Milva Gabriela
Malfatti, Germán
Daniela, Curin
Mariani, Mauro
Contrera, Gustavo Aníbal Gabriel
Gilera, Octavio Miguel
Resumen
We study local and non-local Polyakov Nambu-Jona-Lasinio models and analyze their respective phase transition diagram. We construct hybrid stars using the zero temperature limit of the local and non-local versions of Nambu-Jona-Lasinio model for quark matter and the modern GM1(L) parametrization of the non-linear relativistic mean field model for hadronic matter. We compare our models with data from PSR J1614-2230 and PSR J0343+0432 and also from GW170817 and itselectromagnetic counterpart GRB170817A and AT2017gfo. We study observational signatures of the appearance of a mixed phase as a result of modeling a phase transition that mimics the Gibbs formalism and compares the results with the sharp first-order phase transition obtained using the Maxwell construction. We also study in detail the g-mode associated with discontinuities in the equation of state and calculate non-radial oscillation modes using relativistic Cowling approximation.