Publication: Hadron matter in neutron stars in view of gravitational wave observations.
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Publication Date
2019-11
Authors
Lope Oter, Eva
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Elsevier
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Abstract
In this review we highlight a few physical properties of neutron stars and their theoretical treatment inasmuch as they can be useful for nuclear and particle physicists concerned with matter at finite density (and newly, temperature). Conversely, we lay out some of the hadron physics necessary to test General Relativity with binary mergers including at least one neutron star, in view of the event GW170817: neutron stars and their mergers reach the highest matter densities known, offering access to the matter side of Einstein's equations. In addition to minimum introductory material for those interested in starting research in the field of neutron stars, we dedicate quite some effort to a discussion of the Equation of State of hadron matter in view of gravitational wave developments; we address phase transitions and how the new data may help; we show why transport is expected to be dominated by turbulence instead of diffusion through most if not all of the star, in view of the transport coefficients that have been calculated from microscopic hadron physics; and we relate many of the interesting physics topics in neutron stars to the radius and tidal deformability. (C) 2019 Elsevier B.V. All rights reserved.
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© Elsevier.
Work supported by grants MINECO:FPA2016-75654-C2-1-P (Spain); Universidad Complutense de Madrid, Spain under research group 910309 and the IPARCOS institute, Spain; and the EU COST Action "PHAROS: The multi-messenger physics and astrophysics of neutron stars" (CA16214).