QCD Phase Diagram and Astrophysical Implications
Abstract
I make a brief review about the QCD phases and the equation of state inferred from the neutron star data. Along the temperature axis at low baryon density, the QCD phase transition is a smooth crossover, and it is a natural extension of our imagination to postulate a similar crossover along the density axis at low temperature. Even without phase transitions, the inferred thermodynamic properties of neutron star matter turn out to be highly nontrivial already at twice of the nuclear saturation density. I also give some discussions about the substantiation of quark matter by means of the gravitational wave signals including the multi-messenger prospect.
Cite
@article{arxiv.2501.01907,
title = {QCD Phase Diagram and Astrophysical Implications},
author = {Kenji Fukushima},
journal= {arXiv preprint arXiv:2501.01907},
year = {2025}
}
Comments
9 pages, 7 figures; some important references omitted due to the page limit added; a proceedings contribution to Aspects of Criticality II, Wroclaw, Poland