Hybrid and quark star matter based on a non-perturbative equation of state

Abstract

With the recent dawn of the multi-messenger astronomy era a new window has opened to explore the constituents of matter and their interactions under extreme conditions. One of the pending challenges of modern physics is to probe the microscopic equation of state (EoS) of cold and dense matter via macroscopic neutron star observations such as their masses and radii. Still unanswered issues concern the detailed composition of matter in the core of neutron stars at high pressure and the possible presence of e.g. hyperons or quarks. By means of a non-perturbative functional renormalization group approach the influence of quantum and density fluctuations on the quark matter EoS in $\beta$-equilibrium is investigated within two- and three-flavor quark-meson model truncations and compared to results obtained with common mean-field approximations where important fluctuations are usually ignored. We find that they strongly impact the quark matter EoS.

15 pages, 7 figures, 2 tables, to be published in PRD

References in corpus (33)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Exact evolution equation for the effective potential
• Color superconductivity in dense quark matter
• Neutron Star Observations: Prognosis for Equation of State Constraints
• Constraints on a phenomenologically parameterized neutron-star equation of state
• The Phase Structure of the Polyakov--Quark-Meson Model
• Cold Quark Matter
• Astrophysical Measurement of the Equation of State of Neutron Star Matter
• Stringent constraints on neutron-star radii from multimessenger observations and nuclear theory
• The QCD phase structure at finite temperature and density
• Sound velocity bound and neutron stars
• Chiral symmetry breaking in continuum QCD
• Symmetry Energy I: Semi-Infinite Matter
• The phase structure of the Polyakov--quark-meson model beyond mean field
• A new quark-hadron hybrid equation of state for astrophysics - I. High-mass twin compact stars
• Compact stars with sequential QCD phase transitions
• Propagators and phase structure of Nf=2 and Nf=2+1 QCD
• Renormalization Group Approach towards the QCD Phase Diagram
• Consistent neutron star models with magnetic field dependent equations of state
• A bound on the speed of sound from holography
• Baryon number fluctuations at finite temperature and density
• Non-perturbative thermal flows and resummations
• Hydrodynamics of Sakai-Sugimoto model in the quenched approximation
• Inhomogeneous phases in the quark-meson model with vacuum fluctuations
• Functional renormalization group studies of nuclear and neutron matter
• Two-solar-mass hybrid stars: a two model description with the Nambu-Jona-Lasinio quark model
• Stiff phases in strongly coupled gauge theories with holographic duals
• Properties of High-Density Matter in Neutron Stars
• Neutron Star Matter as a Relativistic Fermi Liquid
• Implications of the fermion vacuum term in the extended SU(3) Quark Meson model on compact stars properties
• Second look to the Polyakov Loop Nambu-Jona-Lasinio model at finite baryonic density

Cited by in corpus (46)

• The nonperturbative functional renormalization group and its applications
• The Science of the Einstein Telescope
• Constraining the onset density of the hadron-quark phase transition with gravitational-wave observations
• QCD at finite temperature and density within the fRG approach: An overview
• Holographic modeling of nuclear matter and neutron stars
• Unified weak/strong coupling framework for nuclear matter and neutron stars
• Constraining hadron-quark phase transition parameters within the quark-mean-field model using multimessenger observations of neutron stars
• Probing the incompressibility of nuclear matter at ultra-high density through the prompt collapse of asymmetric neutron star binaries
• Nonperturbative quark matter equations of state with vector interactions
• Dense and Hot QCD at Strong Coupling
• Rapidly Spinning Compact Stars with Deconfinement Phase Transition
• EoS for hot neutron stars
• Remarks on nuclear matter: how an ${\omega }_0$ condensate can spike the speed of sound, and a model of $Z(3)$ baryons
• Renormalization Group Studies of Dense Relativistic Systems
• Emergent Hadrons and Diquarks
• Holographic QCD in the NICER era
• A Bayesian analysis of the properties of hybrid stars with the NJL model
• Ultracompact hybrid stars consistent with multimessenger astrophysics
• Numerical fluid dynamics for FRG flow equations: Zero-dimensional QFTs as numerical test cases. III. Shock and rarefaction waves in RG flows reveal limitations of the $N\to \infty$ limit in $O(N)$-type models
• From quarks and gluons to color superconductivity at supranuclear densities
• Behavior of anisotropic fluids with Chaplygin equation of state in Buchdahl spacetime
• Central Speed of Sound, Trace Anomaly and Observables of Neutron Stars from Perturbative Analyses of Scaled TOV Equations
• Neutron star properties with careful parameterization in the (axial)vector meson extended linear sigma model
• Thermodynamics from the quark condensate
• Detectability of a phase transition in neutron star matter with third-generation gravitational wave interferometers
• Strong-interaction matter under extreme conditions from chiral quark models with nonlocal separable interactions
• Causality violation and the speed of sound of hot and dense quark matter in the Nambu--Jona-Lasinio model
• Phenomenology of $J^{PC}=3^{--}$ tensor mesons
• Hybrid stars with reactive interfaces: analysis within the Nambu-Jona-Lasinio model
• Novel Scalings of Neutron Star Properties from Analyzing Dimensionless Tolman--Oppenheimer--Volkoff Equations
• Universal Relations for rapidly rotating neutron stars using supervised machine-learning techniques
• Regulator scheme dependence of the chiral phase transition at high densities
• Masses and decay constants of (axial-)vector mesons at finite chemical potential
• Quark-quark interaction and quark matter in neutron stars
• QCD equation of state and the structure of neutron stars in NJL model
• Exploring pathways to forming twin stars
• QCD phase transition and equation of state of stellar strong interaction matter via Dyson-Schwinger equation approach
• Direct nonparametric multimessenger constraints on the equation of state of cold dense nuclear matter
• Tidal deformability of neutron stars with exotic particles within a density dependent relativistic mean field model in R-squared gravity
• Renormalizing the Quark-Meson-Diquark Model
• How Neutron Star Observations Point Towards Exotic Matter: Existing Explanations and a Prospective Proposal
• Series solutions to the TOV equations
• FRG analysis for a relativistic BEC in arbitrary spatial dimensions
• Renormalization-Group Invariant Parity-Doublet Model for Nuclear and Neutron-Star Matter
• Equation-of-State Independent Relations in Rapidly Rotating Hybrid Stars
• Detecting inhomogeneous chiral condensation from the bosonic two-point function in the $(1+1)$-dimensional Gross-Neveu model in the mean-field approximation