Article
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Constraints on Phase Transitions in Neutron Star Matter
Version 1
: Received: 21 December 2023 / Approved: 21 December 2023 / Online: 25 December 2023 (09:55:56 CET)
A peer-reviewed article of this Preprint also exists.
Brandes, L.; Weise, W. Constraints on Phase Transitions in Neutron Star Matter. Symmetry 2024, 16, 111. Brandes, L.; Weise, W. Constraints on Phase Transitions in Neutron Star Matter. Symmetry 2024, 16, 111.
Abstract
Recent inference results of the sound velocity in the cores of neutron stars are summarized. Implications for the equation of state and the phase structure of highly compressed baryonic matter are discussed. In view of the strong constraints imposed by the heaviest known pulsars, the equation of state must be very stiff in order to ensure the stability of these extreme objects. This required stiffness limits the possible appearance of phase transitions in neutron star cores. In view of these empirical findings, much discussed issues such as the quest for a phase transition towards restored chiral symmetry and the active degrees of freedom in cold and dense baryonic matter, are explored.
Keywords
dense baryonic matter; neutron stars; phase transitions
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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