Hybrid stars within the framework of the Sigma-Omega-Rho model combined with the MIT and NJL models

Abstract

In this paper, we investigate the structure of hybrid stars consisting of hadrons (neutrons, protons, sigmas, lambdas), leptons (electrons, muons), and quarks (up, down, strange). We use a relativistic mean-field (RMF) model namely the Sigma-omega-rho model for the hadronic phase and the MIT bag model as well as the NJL model for the quark phase. In addition, Maxwell and Gibbs conditions are employed to investigate the hadron-Quark phase transition. Finally, by obtaining the mass-radius relation, $M(M_{sun})⩽2.07$ is predicted for such hybrid stars.

23 pages, 10 figures

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• How Neutron Star Observations Point Towards Exotic Matter: Existing Explanations and a Prospective Proposal
• Characterizing the quark-hadron mixed phase in compact star cores : sensitivity to nuclear saturation and quark-model parameters at finite-temperature