Heavy Neutron Star Phenomenology with an H-dibaryon
arXiv:2503.21167 · doi:10.1103/qs6f-1css
Abstract
The equation of state for dense nuclear matter in -equilibrium is explored including the possibility of a doubly-strange H-particle. Consistent with experimental constraints, the mass of the H in free space is taken to be near the threshold. Within the quark-meson coupling model, which we use, no new parameters are required to describe the interaction between the H-dibaryon and the other baryons. The maximum mass is only slightly reduced, and the tidal deformability is essentially unchanged with this addition. In heavy neutron stars the H is abundant and extends as far as 6 km from the center of the core.
arXiv comment7 pages, 5 figures, submitted to PRC
References in corpus (35)
- Shapiro delay measurement of a two solar mass neutron star
- 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
- Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
- Determination of the Equation of State of Dense Matter
- A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
- Equations of state for supernovae and compact stars
- Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
- Statistical Model for a Complete Supernova Equation of State
- PSR J0952-0607: The Fastest and Heaviest Known Galactic Neutron Star
- The Dense Matter Equation of State from Neutron Star Radius and Mass Measurements
- New Equations of State in Simulations of Core-Collapse Supernovae
- The role of nucleon structure in finite nuclei
- A NICER View of the Nearest and Brightest Millisecond Pulsar: PSR J0437$\unicode{x2013}$4715
- Light Nuclei and Hypernuclei from Quantum Chromodynamics in the Limit of SU(3) Flavor Symmetry
- Two-Baryon Potentials and H-Dibaryon from 3-flavor Lattice QCD Simulations
- The Radius of the High-mass Pulsar PSR J0740+6620 with 3.6 yr of NICER Data
- The Stability of Nuclear Matter in the Nambu-Jona-Lasinio Model
- Cold uniform matter and neutron stars in the quark-mesons-coupling model
- Direct Astrophysical Tests of Chiral Effective Field Theory at Supranuclear Densities
- Binding of Hypernuclei in the Latest Quark-Meson Coupling Model
- Spin-dependent structure functions in nuclear matter and the polarized EMC effect
- LOFAR discovery of the fastest-spinning millisecond pulsar in the Galactic field
- Quark-Meson-Coupling (QMC) model for finite nuclei, nuclear matter and beyond
- Quark distributions in nuclear matter and the EMC effect
- H-dibaryon
- Sensitivity of Au+Au collisions to the symmetric nuclear matter equation of state at 2 -- 5 nuclear saturation densities
- Nuclear Matter with a Bose Condensate of Dibaryons in Relativistic Mean-Field Theory
- Neutron Star Constraints on the H Dibaryon
- On the Speed of Sound in Hyperonic Stars
- Parameter Optimisation for the Latest Quark-Meson Coupling Energy Density Functional
- Observational constraint from the heaviest pulsar PSR J0952-0607 on the equation of state of dense matter in relativistic mean field model
- Dibaryons in nuclear matter
- Tensor and pairing interactions within the QMC energy density functional
- Hypernuclear constraints on the existence and lifetime of a deeply bound dibaryon