Effects of a Brueckner-Hartree-Fock-corrected effective mass on speed of sound, conformality, and observables of dark matter-admixed neutron stars
arXiv:2506.15328 · doi:10.1103/9qlh-w64b
Abstract
We construct an equation of state describing cold and dense matter in the core of neutron stars which includes an admixture of fermionic dark matter and incorporates nucleon effective masses derived from the relativistic Brueckner-Hartree-Fock (BHF) many-body approach within a relativistic mean-field model. Such a BHF-informed mixed-model approach increases stellar compactness, with mass-radius configurations which are consistent with smaller, lighter pulsars. The model displays the expected non-monotonic behavior of sound speed hinted at by neutron star data, and is closer to the conformal bound at maximum mass. We find that the model displays tension with bounds on heavier pulsars, suggesting that the hypothesis of an aggregated dark component in neutron stars needs further critical study.
arXiv comment18 pages, 5 figures and 5 tables, matches with the journal version
References in corpus (83)
- 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
- GW170817: Measurements of Neutron Star Radii and Equation of State
- PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
- A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
- GW190425: Observation of a Compact Binary Coalescence with Total Mass
- Tidal Love numbers of neutron stars
- A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
- Tidal deformability of neutron stars with realistic equations of state and their gravitational wave signatures in binary inspiral
- Gravitational-wave constraints on the neutron-star-matter Equation of State
- Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
- Constraints on the Self-Interaction Cross-Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657-5
- Evidence for quark-matter cores in massive neutron stars
- PSR J0952-0607: The Fastest and Heaviest Known Galactic Neutron Star
- Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
- Beyond Collisionless Dark Matter: Particle Physics Dynamics for Dark Matter Halo Structure
- The Dense Matter Equation of State from Neutron Star Radius and Mass Measurements
- Constraining the speed of sound inside neutron stars with chiral effective field theory interactions and observations
- Quarkyonic Matter and Neutron Stars
- Sound velocity bound and neutron stars
- A NICER View of the Nearest and Brightest Millisecond Pulsar: PSR J0437$\unicode{x2013}$4715
- Connecting Neutron Star Observations to Three-Body Forces in Neutron Matter and to the Nuclear Symmetry Energy
- On the Sound Speed in Neutron Stars
- Nucleon Effective Masses in Neutron-Rich Matter
- Interplay of Three-Body Interactions in the EOS of Nuclear Matter
- Chiral Effective Field Theory and the High-Density Nuclear Equation of State
- The QCD equation of state from the lattice
- NNNLO pressure of cold quark matter: leading logarithm
- Strongly interacting matter exhibits deconfined behavior in massive neutron stars
- Trace anomaly as signature of conformality in neutron stars
- The equation of state of neutron matter, symmetry energy, and neutron star structure
- Effects of fermionic dark matter on properties of neutron stars
- Symmetric nuclear matter from the strong interaction
- Application of the density dependent hadron field theory to neutron star matter
- A bound on the speed of sound from holography
- Reaching percolation and conformal limits in neutron stars
- PSR J0030+0451, GW170817 and the nuclear data: joint constraints on equation of state and bulk properties of neutron stars
- Neutron star properties in density-dependent relativistic Hartree-Fock theory
- What is the nature of the HESS J1731-347 compact object?
- Nucleon effective masses within the Brueckner-Hartree-Fock theory: Impact on stellar neutrino emission
- Magnetic neutron star cooling and microphysics
- Constraints on the moment of inertia of PSR J0737-3039A from GW170817
- Tidal Deformability of Dark Matter Admixed Neutron Stars
- Inference of the sound speed and related properties of neutron stars
- Bounds on the speed of sound in dense matter, and neutron star structure
- Perturbative QCD and the Neutron Star Equation of State
- Investigating Signatures of Phase Transitions in Neutron-Star Cores
- g-mode Oscillations in Hybrid Stars: A Tale of Two Sounds
- Is GW190425 consistent with being a neutron starblack hole merger?
- Thermal evolution and quiescent emission of transiently accreting neutron stars
- Implications of Feebly Interacting Dark Sector on Neutron Star Properties and Constraints from GW170817
- Stiff phases in strongly coupled gauge theories with holographic duals
- Dark Matter Effects on the Compact Star Properties
- Unified neutron star EOSs and neutron star structures in RMF models
- Viscous damping of r-mode oscillations in compact stars with quark matter
- Dark matter effects on hybrid star properties
- In-medium enhancement of the modified Urca neutrino reaction rates
- Nucleon effective mass in hot dense matter
- SU(2) Chiral sigma model and the properties of neutron stars
- On the moment of inertia of PSR J0737-3039 A from LIGO/Virgo and NICER
- Neutron-star radii based on realistic nuclear interactions
- Recovering the conformal limit of color superconducting quark matter within a confining density functional approach
- Feeble DM-SM Interaction via New Scalar and Vector Mediators in Rotating Neutron Stars
- Neutrality of a magnetized two-flavor quark superconductor
- Maximally incompressible neutron star matter
- XTE J1814-338 as a dark matter admixed neutron star
- Constraints on nuclear matter parameters of an Effective Chiral Model
- XTE J1814-338: A potential hybrid star candidate
- PSR J1231-1411 revisited: Pulse Profile Analysis of X-ray Observation
- Curvature of the energy per particle in neutron stars
- Speed of sound in dense matter and two families of compact stars
- Effect of strong magnetic field on competing order parameters in two-flavor dense quark matter
- Analyzing the speed of sound in neutron star with machine learning
- Effect of temperature and magnetic field on two-flavor superconducting quark matter
- On the moment of inertia of PSR J0348+0432
- Dark matter admixed neutron stars with a realistic nuclear equation of state from chiral nuclear interactions
- Stability of Neutron Stars with Dark Matter Core Using Three Crustal Types and the Impact on Mass-Radius Relations
- Influence of effective nucleon mass on equation of state for supernova simulations and neutron stars
- The neutron star population in M28: a joint Chandra/GBT look at pulsar paradise
- Temperature-dependence of single-particle properties in isospin-symmetric and -asymmetric matter within the Dirac-Brueckner-Hartree-Fock model
- Density-dependent quark mean-field model for nuclear matter and neutron stars
- Connecting Relativistic Density Functional Theory to Microscopic Calculations