Quarkyonic matter with chiral symmetry restoration

TL;DR

This paper develops a unified model combining quarkyonic matter and the parity doublet model to describe dense nuclear matter, capturing the transition from hadronic to quark matter with chiral symmetry restoration effects.

Contribution

It introduces a novel hybrid approach incorporating chiral invariant masses, enabling a smooth crossover between hadronic and quark matter in symmetric nuclear matter.

Findings

Predicts a gradual onset of quark degrees of freedom at high densities

Derives an equation of state for the hybrid system

Maintains aspects of confinement during transition

Abstract

We present a novel unified approach to describe the dense symmetric nuclear matter by combining the quarkyonic matter framework with the parity doublet model. This integration allows for a consistent treatment of the transition from hadronic to quark degrees of freedom while incorporating chiral symmetry restoration effects. Our model introduces a chiral invariant mass for both baryons and constituent quarks, enabling a smooth crossover between hadronic and quark matter in symmetric nuclear matter. We derive the equation of state (EOS) for this hybrid system and investigate its thermodynamic properties. The model predicts a gradual onset of quark degrees of freedom at high densities while maintaining aspects of confinement.