The application of the Quark-Hadron Chiral Parity-Doublet Model to neutron star matter

Abstract

The Quark-Hadron Chiral Parity-Doublet model (Q$\chi$P) is applied to calculate compact star properties in the presence of a deconfinement phase transition. Within this model, a consistent description of nuclear matter properties, chiral symmetry restoration, and a transition from hadronic to quark and gluonic degrees of freedom is possible within one unified approach. We find that the equation of state obtained is consistent with recent perturbative quantum chromodynamics (QCD) results and is able to accommodate observational constraints of massive and small neutron stars. Furthermore, we show that important features of the equation of state, such as the symmetry energy and its slope, are well within their observational constraints.

8 pages, 9 figures and 1 table

References in corpus (10)

• The QCD equation of state with dynamical quarks
• The QCD phase diagram at nonzero quark density
• Renormalization Group Approach towards the QCD Phase Diagram
• The chiral critical point of Nf=3 QCD at finite density to the order (mu/T)^4
• An effective chiral Hadron-Quark Equation of State
• Nuclear Matter and Neutron stars in a Parity Doublet Model
• The problem of repulsive quark interactions - Lattice versus mean field models
• Reconciling Nuclear and Astrophysical Constraints
• Neutron stars within the SU(2) parity doublet model
• Mean field approach to flavor susceptibilities with a vector interaction

Cited by in corpus (20)

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• Chiral symmetry restoration and the $\Delta$ matter formation in neutron stars
• Chiral condensates for neutron stars in hadron-quark crossover: from a parity doublet nucleon model to an NJL quark model
• Impacts of anomaly on nuclear and neutron star equation of state based on a parity doublet model
• Speed of sound and quark confinement inside neutron stars
• Neutron star matter based on a parity doublet model including the $a_0(980)$ meson
• Compactness in the Thermal Evolution of Twin Stars
• Fluctuations near the liquid-gas and chiral phase transitions in hadronic matter
• Dilepton Signature of a First-Order Phase Transition
• Fluctuations and correlations of baryonic chiral partners
• Interplay between chiral dynamics and repulsive interactions
• Anatomy of critical fluctuations in hadronic matter
• Investigating the Impact of Higher-Order Phase Transitions in Binary Neutron-Star Mergers
• Chiral condensates for neutron stars in hadron-quark crossover; from a parity doublet nucleon model to an NJL quark model
• Recurring region for neutron-star observables
• Parity-doubled nucleons can rapidly cool neutron stars
• Chiral, parity-doublet, effective-Lagrangian mean-field theories for nuclear and astrophysical phenomenology
• Strangeness in astrophysics: Theoretical developments