(No) neutron star maximum mass constraint from hypernuclei

Abstract

(Abridged) The recent measurement of the mass of two $2M_{\odot }$ pulsars has raised the question whether such large masses allow for the existence of exotic degrees of freedom, such as hyperons, inside neutron stars. In the present work we will investigate how the existing hypernuclei properties may constrain the neutron star equation of state and confront the neutron star maximum masses obtained with equations of state calibrated to hypernuclei properties with the astrophysical $2M_{\odot }$ constraint. The study is performed using a relativistic mean field approach to describe both the hypernuclei and the neutron star equations of state. A set of five models consistent with $2M_{\odot }$ for a purely nucleonic composition are employed. The $\Lambda$-meson couplings are determined for all the models considered. Hyperonic stars with the complete baryonic octet are studied, restricting the coupling of the $\Sigma$ and $\Xi$ hyperons to the $\omega -$, $\rho -$ and $\sigma -$mesons due to the lack of experimental data, and maximum star masses calculated for unified equations of state. We conclude that the currently available hypernuclei experimental data and the lack of constraints on the asymmetric equation of state of nuclear matter at high densities do not allow to further constrain the neutron star matter equation of state using the recent $2M_{\odot }$ observations. It is also shown that the $\Lambda$ potential in symmetric nuclear matter takes a value $\sim 30-32$ MeV at saturation for the $g_{\omega \Lambda }$ coupling given by the SU(6) symmetry, close to values generally used in the literature. However, the $\Lambda$ potential in $\Lambda$ matter varies between -16 and -8 MeV taking for vector mesons couplings the SU(6) values, at variance with generally employed values between $-1$ and $-5$ MeV.

References in corpus (17)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• Hyperon Puzzle: Hints from Quantum Monte Carlo Calculations
• Extended-soft-core Baryon-Baryon Model II. Hyperon-Nucleon Interaction
• Estimation of the effect of hyperonic three-body forces on the maximum mass of neutron stars
• Hyperon mixing and universal many-body repulsion in neutron stars
• Equation of state and thickness of the inner crust of neutron stars
• Constraining hypernuclear density functional with $\Lambda$-hypernuclei and compact stars
• Rejecting proposed dense-matter equations of state with quiescent low-mass X-ray binaries
• Neutron stars with hyperon cores: stellar radii and EOS near nuclear density
• Extended-soft-core Baryon-Baryon Model I. Nucleon-Nucleon Scattering (ESC04) Extended-soft-core Baryon-Baryon Model I. Nucleon-Nucleon Scattering (ESC04)
• Double-$\Lambda$ hypernuclei in the relativistic mean-field theory
• The role of strangeness in hybrid stars and possible observables
• Metastability of hadronic compact stars
• Effects of $\Lambda$ hyperons on the nuclear equation of state in a Dirac-Brueckner-Hartree-Fock model
• Reexamining the neutron skin thickness within a density dependent hadronic model

Cited by in corpus (79)

• Neutron Stars and the Nuclear Equation of State
• GW170817: constraining the nuclear matter equation of state from the neutron star tidal deformability
• Gravitational waves from neutron star mergers and their relation to the nuclear equation of state
• Measurement of the mass difference and the binding energy of the hypertriton and antihypertriton
• Competition between delta isobars and hyperons and properties of compact stars
• Effects of dark matter on the nuclear and neutron star matter
• A new temperature dependent hyperonic equation of state: application to rotating neutron star models and I-Q-relations
• Heavy Baryons in Compact Stars
• The Science of the Einstein Telescope
• Constraining the onset density of the hadron-quark phase transition with gravitational-wave observations
• Proto-neutron stars with heavy baryons and universal relations
• Implications from GW170817 for $\Delta$-isobar admixed hypernuclear compact stars
• Phase transitions in neutron stars and their links to gravitational waves
• Relativistic hypernuclear compact stars with calibrated equations of state
• Hyperonic stars and the symmetry energy
• Constraining strangeness in dense matter with GW170817
• Delta baryons and diquark formation in the cores of neutron stars
• The effects of self-interacting bosonic dark matter on neutron star properties
• Hyperons: the strange ingredients of the nuclear equation of state
• Multi-messenger and multi-physics Bayesian inference for GW170817 binary neutron star merger
• Hyperons in hot dense matter: what do the constraints tell us for equation of state?
• Probing the incompressibility of nuclear matter at ultra-high density through the prompt collapse of asymmetric neutron star binaries
• Equations of state for hot neutron stars -- II. The role of exotic particle degrees of freedom
• Hypernuclear stars from relativistic Hartree-Fock density functional theory
• Rapidly rotating $\Delta$-resonance-admixed hypernuclear compact stars
• Constraining compact star properties with nuclear saturation parameters
• Astrophysical implications on hyperon couplings and hyperon star properties with relativistic equations of states
• Thermal evolution of relativistic hyperonic compact stars with calibrated equations of state
• EoS for hot neutron stars
• $I-$Love$-C$ relation for an anisotropic neutron star
• Bayesian inference of signatures of hyperons inside neutron stars
• Systematic study on the quark-hadron mixed phase in compact stars
• Neutron star matter with strange interactions in a relativistic quark model
• Heavy Magnetic Neutron Stars
• Bulk viscosity in neutron stars with hyperon cores
• Effects of $\varphi$-meson on properties of hyperon stars in density dependent relativistic mean field model
• Cooling of hypernuclear compact stars: Hartree-Fock models and high-density pairing
• A universal formula for the relativistic correction to the mutual friction coupling time-scale in neutron stars
• Role of vector channel in different classes of (non) magnetized neutron stars
• Chiral symmetry restoration and the $\Delta$ matter formation in neutron stars
• New effective interactions for hypernuclei in density dependent relativistic mean field model
• Thermal behavior as indicator for hyperons in binary neutron star merger remnants
• Baryonic models of ultra-low-mass compact stars for the central compact object in HESS J1731-347
• Delta baryons in neutron stars
• Revisiting the Equation of State of Hybrid Stars in the Dyson-Schwinger Equation Approach to QCD
• Massive neutron star with strangeness in a relativistic mean-field model with a high-density cut-off
• Density Functional approach for multi-strange hypernuclei: competition between $\Lambda$ and ${\Xi }^{0,-}$ hyperons
• Hyperon threshold and stellar radii
• A bag model of matter condensed by the strong interaction
• In medium properties of $K^0$ and $\varphi$ mesons under an external magnetic field
• Repulsive $\Lambda$ potentials in dense neutron star matter and binding energy of $\Lambda$ in hypernuclei
• On obtaining neutron-star mass and radius constraints from quiescent low-mass X-ray binaries in the Galactic plane
• Measurement of ${}_{\mathrm{\Lambda }}^4\mathrm{H}$ and ${}_{\mathrm{\Lambda }}^4\mathrm{He}$ binding energy in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 3 GeV
• $\Lambda \Lambda$ pairing in multi-strange hypernuclei
• Massive relativistic compact stars from SU(3) symmetric quark models
• Correlation of the hyperon potential stiffness with hyperon constituents in neutron stars and heavy-ion collisions
• Kaon-meson condensation and $\Delta$ resonance in hyperonic stellar matter within a relativistic mean-field model
• Polytropic fits of modern and unified equations of state
• Momentum dependent mean-fields of (anti)hyperons
• Recalibration of the binding energy of hypernuclei measured in emulsion experiments and its implications
• Femtoscopic study of the $\Lambda \alpha$ interaction
• Single ${\Lambda }_c^{+}$ hypernuclei within quark mean-field model
• The impact of hyperons on neutron star mergers: gravitational waves, mass ejection and black hole formation
• Hyperonization in compact stars
• Detecting Hyperons in neutron stars -- a machine learning approach
• Exploring $\Delta$-resonance in neutron stars: implications from astrophysical and nuclear observations
• Neutron star equation of state: identifying hadronic matter characteristics
• Impact of $\Xi$-Hypernuclear Constraints on Relativistic Equation of State and Properties of Hyperon Stars
• I-C-Q relations for rapidly rotating stable hybrid stars
• Charmed hypernuclei within density-dependent relativistic mean-field theory
• Neutron star properties: Constraining the nuclear matter EoS
• Effects of Phi and ${\sigma }^{\ast }$-meson on properties of hyperon stars including $\Delta$ resonance
• Properties of hyperons in nuclear matter from chiral hyperon-nucleon interactions at next-to-next-to-leading order
• Probing $\Lambda$ potential at high and low densities via \(^3_Λ\)H production in C+C reactions
• Exploring Hyperon Skyrme Forces in Multi-$\Lambda$ Hypernuclei and Neutron Star Matter
• Instability windows of relativistic r-modes in stably stratified neutron stars with hyperonic cores
• Systematic study for the surface properties of neutron star
• Heavy baryons in hot stellar matter with light nuclei and hypernuclei
• On the Destabilization of High-Mass Neutron Stars by the Emergence of $d^{\ast }$-Hexaquarks