Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model

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...

Full description

Saved in:
Bibliographic Details
Published inarXiv.org
Main Authors Ranea-Sandoval, Ignacio Francisco, Orsaria, Milva Gabriela, Malfatti, Germán, Curin, Daniela, Mariani, Mauro, Gustavo Aníbal Contrera, Octavio Miguel Guilera
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 27.03.2019
Subjects
Cowlings
Equations of state
Oscillation modes
Parameterization
Phase transitions
Physics - High Energy Astrophysical Phenomena
Physics - Nuclear Theory
Quarks
Relativism
Relativistic effects
Online AccessGet full text

Cover

More Information
Summary: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 its electromagnetic 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 compare 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.
ISSN:2331-8422
DOI:10.48550/arxiv.1903.11974