Two-flavor color superconducting quark stars may not exist

Abstract

Large uncertainties in the determinations of the equation of state of dense stellar matter allow the intriguing possibility that the bulk quark matter in beta equilibrium might be the true ground state of the matter at zero pressure. And quarks will form Cooper pairs very readily since the dominant interaction between quarks is attractive in some channels. As a result, quark matter will generically exhibit color superconductivity, with the favored pairing pattern at intermediately high densities being two-flavor pairing. In the light of several possible candidates for such self-bound quark stars, including the very low-mass central compact object in supernova remnant HESS J1731-347 reported recently, we carry out one field-theoretic model, the Nambu-Jona-Lasinio model, of investigation on the stability of beta-stable two-flavor color superconducting (2SC) phase of quark matter, nevertheless find no physically-allowed parameter space for the existence of 2SC quark stars.

arXiv comment13 pages, 6 figures, with appendix; ApJ (2024) accepted

References in corpus (56)

• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• Color superconductivity in dense quark matter
• NJL-model analysis of dense quark matter
• QCD at Finite Baryon Density: Nucleon Droplets and Color Superconductivity
• Color-Flavor Locking and Chiral Symmetry Breaking in High Density QCD
• Color superconducting quark matter
• Enforced Electrical Neutrality of the Color-Flavor Locked Phase
• The phase diagram of neutral quark matter: Self-consistent treatment of quark masses
• Absence of two-flavor color-superconductivity in compact stars
• The phase diagram of three-flavor quark matter under compact star constraints
• Hadron-Quark Crossover and Massive Hybrid Stars with Strangeness
• Color-Neutral Superconducting Quark Matter
• Gaps and Critical Temperature for Color Superconductivity
• Gapless color superconductivity at zero and at finite temperature
• Trace anomaly as signature of conformality in neutron stars
• Constraints on interquark interaction parameters with GW170817 in a binary strange star scenario
• Role of Vector Interaction and Axial Anomaly in the PNJL Modeling of the QCD Phase Diagram
• Charge Neutrality Effects on 2-flavor Color Superconductivity
• Quark matter may not be strange
• Debye screening and Meissner effect in a two-flavor color superconductor
• What is the nature of the HESS J1731-347 compact object?
• Debye screening and Meissner effect in a three-flavor color superconductor
• Unified Interacting Quark Matter and its Astrophysical Implications
• Bayesian analysis of neutron-star properties with parameterized equations of state: the role of the likelihood functions
• Neutron star equation of state: QMF modeling and applications
• Evidence against a strong first-order phase transition in neutron star cores: impact of new data
• Massive quark propagator and competition between chiral and diquark condensate
• A light strange star in the remnant HESS J1731-347: minimal consistency checks
• Massive Quark Propagator in the Color-superconducting Phase
• Constraints on the maximum mass of neutron stars with a quark core from GW170817 and NICER PSR J0030+0451 data
• The calculation of the equation of state of QCD at finite chemical potential and zero temperature
• Nonlocal Polyakov-Nambu-Jona-Lasinio model and imaginary chemical potential
• Effects of chiral imbalance and magnetic field on pion superfluidity and color superconductivity
• The Meissner Effect in a Two Flavor LOFF Color Superconductor
• Constraining hadron-quark phase transition parameters within the quark-mean-field model using multimessenger observations of neutron stars
• Bayesian inference of strange star equation of state using the GW170817 and GW190425 data
• Probing up-down quark matter via gravitational waves
• Colour-Flavour Locked Quark Stars in Light of the Compact Object in HESS J1731-347 and the GW190814 Event
• Chiral symmetry breaking, color superconductivity and color neutral quark matter: a variational approach
• On the moment of inertia of PSR J0737-3039 A from LIGO/Virgo and NICER
• Interacting $ud$ and $uds$ quark matter at finite densities and quark stars
• Quantum nucleation of up-down quark matter and astrophysical implications
• Bayesian inference of quark star equation of state using the NICER PSR J0030+0451 data
• Nuclear and Hybrid Equations of State in Light of the Low-Mass Compact Star in HESS J1731-347
• Relativistic mean field model for ultra-compact low mass neutron star of HESS J1731-347
• Hybrid stars in light of the HESS J1731-347 remnant and the PREX-II experiment
• Neutral Color Superconductivity Including Inhomogeneous Phases at Finite Temperature
• The Nonperturbative Color Meissner Effect in a Two-Flavor Color Superconductor
• Baryonic models of ultra-low-mass compact stars for the central compact object in HESS J1731-347
• Testing the phase transition parameters inside neutron stars with the production of protons and lambdas in relativistic heavy-ion collisions
• The Color-Superconducting {'}t Hooft Interaction
• Non-strange quark stars within resummed QCD
• Resolving phase transition properties of dense matter through tidal-excited g-mode from inspiralling neutron stars
• Mesons and diquarks in neutral color superconducting quark matter with $\beta$-equilibrium
• Gluon effects on the equation of state of color superconducting strange stars
• Diquark and chiral condensate in a self-consistent NJL-type model

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• Hybrid stars with large quark cores within the parity doublet model and modified NJL model
• Universal relations for anisotropic interacting quark stars
• Bayesian inference of strangeon matter using the measurements of PSR J0437-4715 and GW190814
• Thermal x-ray studies of neutron stars and the equation of state
• Constraints from Gamma-ray Burst Phenomenology on the Hypothesis of Quark Star as the central engines of Gamma-ray Bursts
• Constraining the competition between the deconfinement and chiral phase transitions in light of the multimessenger era