nEoS: neutron star equation of state from hadron physics alone

被引：25

作者：

Lope Oter, Eva ^{[1
,2
]}

Windisch, Andreas ^{[3
,4
]}

Llanes-Estrada, Felipe J. ^{[1
,2
]}

Alford, Mark ^{[3
]}

机构：

[1] Univ Complutense Madrid, Dept Fis Teor, Plaza Ciencias 1, E-28040 Madrid, Spain

[2] Univ Complutense Madrid, Inst Phys Particles & Cosmos IPARCOS, Plaza Ciencias 1, E-28040 Madrid, Spain

[3] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[4] Karl Franzens Univ Graz, Dept Phys, Univ Pl 5, A-8010 Graz, Austria

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2019年 / 46卷 / 08期

基金：

奥地利科学基金会;

关键词：

neutron star equation of state; tests of general relativity; equation of state;

D O I：

10.1088/1361-6471/ab2567

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We contribute a publicly available set of tables and code to provide equations of state (EoS) for matter at neutron star densities. Our EoS are constrained only by input from hadron physics and fundamental principles, without feedback from neutron star observations, and so without relying on general relativity (GR). They can therefore be used to test GR 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 monotony 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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