Constraints on the High-Density Nuclear Equation of State from Neutron Star Observables
David Blaschke (Uniwersytet Wroclawski, Wroclaw, Poland & Bogoliubov, Laboratory for Theoretical Physics, JINR, Dubna, Russia), Thomas Klaehn, (Physics Division, ANL, Argonne, Illinois, USA), Fridolin Weber (Department, of Physics, San Diego State University, San Diego
TL;DR
This paper reviews how observations of neutron stars can constrain the properties of ultra-dense nuclear matter and the possible exotic phases within their cores.
Contribution
It provides an overview of astrophysical constraints on the high-density nuclear equation of state and discusses potential phases of matter in neutron star cores.
Findings
Neutron star observations limit the stiffness of the nuclear equation of state.
Possible existence of exotic matter phases in neutron star cores.
Constraints help refine models of ultra-dense nuclear matter.
Abstract
Depending on the density reached in the cores of neutron stars, such objects may contain stable phases of novel matter found nowhere else in the Universe. This article gives a brief overview of these phases of matter and discusses astrophysical constraints on the high-density equation of state associated with ultra-dense nuclear matter.
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