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- Title
Imposing multi-physics constraints at different densities on the neutron Star Equation of State.
- Authors
Ghosh, Suprovo; Chatterjee, Debarati; Schaffner-Bielich, Jürgen
- Abstract
Neutron star matter spans a wide range of densities, from that of nuclei at the surface to exceeding several times normal nuclear matter density in the core. While terrestrial experiments, such as nuclear or heavy-ion collision experiments, provide clues about the behaviour of dense nuclear matter, one must resort to theoretical models of neutron star matter to extrapolate to higher density and finite neutron/proton asymmetry relevant for neutron stars. In this work, we explore the parameter space within the framework of the Relativistic Mean Field model allowed by present uncertainties compatible with state-of-the-art experimental data. We apply a cut-off filter scheme to constrain the parameter space using multi-physics constraints at different density regimes: chiral effective field theory, nuclear and heavy-ion collision data as well as multi-messenger astrophysical observations of neutron stars. Using the results of the study, we investigate possible correlations between nuclear and astrophysical observables.
- Subjects
NEUTRON stars; DENSITY of stars; COLLISIONS (Nuclear physics); EQUATIONS of state; NUCLEAR matter; CHIRALITY of nuclear particles; NUCLEAR density
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2022, Vol 58, Issue 3, p1
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/s10050-022-00679-w