Unbiased interpolated neutron-star EoS at finite T for modified gravity studies

Abstract

Neutron stars and their mergers provide the highest-density regime in which Einstein's equations in full (with a matter source) can be tested against modified theories of gravity. But doing so requires a priori knowledge of the Equation of State from nuclear and hadron physics, where no contamination from computations of astrophysics observables within General Relativity has been built in. We extend the nEoS uncertainty bands, useful for this very purpose, to finite (but small) temperatures up to 30 MeV, given that the necessary computations in ChPT and in pQCD at already available in the literature. The temperature-dependent band boundaries will be provided through the COMPOSE repository and our own website.

7 pages, 10 plots

References in corpus (14)

• Cold Quark Matter
• Neutron Stars and the Nuclear Equation of State
• A new quark-hadron hybrid equation of state for astrophysics - I. High-mass twin compact stars
• Anisotropic compact stars in $f(R)$ gravity
• Equation of State for Nucleonic and Hyperonic Neutron Stars with Mass and Radius Constraints
• Realistic Finite-Temperature Effects in Neutron Star Merger Simulations
• Constraints on the phase transition and nuclear symmetry parameters from PSR $\mathrm{J}0740+6620$ and multimessenger data of other neutron stars
• Analysis of the neutron matter equation of state and the symmetry energy up to fourth order of chiral effective field theory
• Equation of state constraints from multi-messenger observations of neutron star mergers
• Nuclear Limits on Non-Minimally Coupled Gravity
• Ladder resummation of spin 1/2 fermion many-body systems with arbitrary partial-wave content
• The maximum mass of neutron stars may be higher than expected: an inference from binary systems
• QCD phase transition and equation of state of stellar strong interaction matter via Dyson-Schwinger equation approach
• On the impact of non-local gravity on compact stars

Cited by in corpus (8)

• Ab-initio QCD calculations impact the inference of the neutron-star-matter equation of state
• Compact stellar structures in Weyl geometric gravity
• The Role of Baryon Structure in Neutron Stars
• Maximum latent heat of neutron star matter independently of General Relativity
• Matter really does matter, or Why $f(R,\mathrm{Matter})$ type theories are significant for gravitational physics and cosmology
• Ridges in rotating neutron-star properties due to first order phase transitions
• Effective Field Theories for Neutron Stars Physics
• Testing gravity with the latent heat of neutron star matter