Hybrid quark-hadron equation of state for multi-messenger astronomy

TL;DR

This paper develops a hybrid quark-hadron model for astrophysics that unifies quark and hadronic matter, consistent with nuclear and astrophysical data, and explores its implications for neutron star properties and phase diagrams.

Contribution

It introduces a comprehensive hybrid quark-meson-nucleon model that unifies quark and hadronic thermodynamics for multi-messenger astronomy applications.

Findings

Equation of state matches nuclear matter properties and heavy ion collision constraints.

Calculated neutron star mass-radius relations align with recent observations.

Studied phase diagram using higher-order cumulants of net-baryon number.

Abstract

We present the recent progress of the hybrid quark-meson-nucleon model for multi-messenger astronomy that unifies the thermodynamics of quark and hadronic degrees of freedom. The obtained equation of state is in accordance with nuclear matter properties at saturation density and with the flow constraint from heavy ion collision experiments. The mass-radius relations and tidal deformabilities for compact stars are calculated and compared with the latest astrophysical observations. The phase diagram of the isospin-symmetirc matter is studied as well in terms of the higher-order cumulants of the net-baryon number.