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nEoS: Neutron Star Equation of State from hadron physics alone

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arxiv 1901.05271 v1 pith:3725GB5T submitted 2019-01-16 gr-qc astro-ph.HEhep-phnucl-th

Eva Lope Oter , Andreas Windisch , Felipe J. Llanes-Estrada , Mark Alford This is my paper · ORCID
classification gr-qcastro-ph.HEhep-phnucl-th
keywords neutronstarstatewithoutdensitiesgeneralhadrononly
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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.

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