Bounding the QCD Equation of State with the Lattice
Nuclear Theory
2023-12-04 v2 High Energy Physics - Lattice
Abstract
The equation of state of QCD matter at high densities is relevant for neutron star structure and for neutron star mergers and has been a focus of recent work. We show how lattice QCD simulations, free of sign problems, can provide an upper bound on the pressure as a function of quark chemical potentials. We show that at large chemical potentials this bound should become quite sharp; the difference between the upper bound on the pressure P-phase-quenched and the true pressure P is of order alpha^3 P. The corrections arise from a single Feynman diagram; its calculation would render remaining corrections of order alpha^4 P.
Keywords
Cite
@article{arxiv.2309.15149,
title = {Bounding the QCD Equation of State with the Lattice},
author = {Guy D. Moore and Tyler Gorda},
journal= {arXiv preprint arXiv:2309.15149},
year = {2023}
}
Comments
11 pages including 2 figures, plus references. Minor corrections and more complete bibliography