nEoS: Neutron Star Equation of State from hadron physics alone

Abstract

We contribute a publicly available set of tables and code to provide Equations of State (EoS) for matter at neutron star densities. Our EoSes are constrained only by input from hadron physics and fundamental principles, without feedback from neutron star observations, and so without relying on General Relativity. They can therefore be used to test General Relativity itself, as well as modified gravity theories, with neutron star observables, without logical circularity. We have adapted state of the art results from NN chiral potentials for the low--density limit, pQCD results for the asymptotically high-density EoS, and use monotonicity and causality as the only restrictions for intermediate densities, for the EoS sets to remain as model-independent as is feasible today.

16 pages with 11 plots

References in corpus (13)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Shapiro delay measurement of a two solar mass neutron star
• Color superconductivity in dense quark matter
• GW170817: Joint Constraint on the Neutron Star Equation of State from Multimessenger Observations
• Cold Quark Matter
• Constraints on neutron star radii based on chiral effective field theory interactions
• Sound velocity bound and neutron stars
• Neutron matter from chiral two- and three-nucleon calculations up to N${}^3$LO
• Towards order-by-order calculations of the nuclear and neutron matter equations of state in chiral effective field theory
• Efficient calculation of chiral three-nucleon forces up to N3LO for ab initio studies
• Phase transitions in dense matter and the maximum mass of neutron stars
• Quark Deconfinement in Rotating Neutron Stars
• An in-medium chiral power counting for nuclear matter and some applications

Cited by in corpus (22)

• How perturbative QCD constrains the Equation of State at Neutron-Star densities
• Ab-initio QCD calculations impact the inference of the neutron-star-matter equation of state
• Mapping neutron star data to the equation of state using the deep neural network
• The Science of the Einstein Telescope
• Relativistic description of dense matter equation of state and compatibility with neutron star observables: a Bayesian approach
• Probing up-down quark matter via gravitational waves
• Remarks on nuclear matter: how an ${\omega }_0$ condensate can spike the speed of sound, and a model of $Z(3)$ baryons
• Equation of State table with hyperon and antikaon for supernova and neutron star merger
• Hadron matter in neutron stars in view of gravitational wave observations
• Could a slow stable hybrid star explain the central compact object in HESS~J1731-347?
• Feasibility of dark matter admixed neutron star based on recent observational constraints
• From NS observations to nuclear matter properties: a machine learning approach
• Causality violation and the speed of sound of hot and dense quark matter in the Nambu--Jona-Lasinio model
• Bayesian inference of the dense matter equation of state built upon extended Skyrme interactions
• Maximum latent heat of neutron star matter independently of General Relativity
• Radial and Non-Radial Oscillations of Inverted Hybrid Stars
• Unbiased interpolated neutron-star EoS at finite T for modified gravity studies
• Nambu-Jona-Lasinio description of hadronic matter from a Bayesian approach
• Constraining Palatini gravity with GR-independent equations of state for neutron stars
• Hybrid stars may have an inverted structure
• Effective Field Theories for Neutron Stars Physics
• Maximum latent heat of neutron star matter without GR