Cold QCD at finite isospin density: confronting effective models with recent lattice data
High Energy Physics - Phenomenology
2019-12-05 v3 High Energy Physics - Lattice
Nuclear Theory
Abstract
We compute the QCD equation of state for zero temperature and finite isospin density within the Nambu-Jona-Lasinio model in the mean field approximation, motivated by the recently obtained Lattice QCD results for a new class of compact stars: pion stars. We have considered both the commonly used Traditional cutoff Regularization Scheme and the Medium Separation Scheme, where in the latter purely vacuum contributions are separated in such a way that one is left with ultraviolet divergent momentum integrals depending only on vacuum quantities. We have also compared our results with the recent results from Lattice QCD and Chiral Perturbation Theory.
Cite
@article{arxiv.1907.09880,
title = {Cold QCD at finite isospin density: confronting effective models with recent lattice data},
author = {Sidney S. Avancini and Aritra Bandyopadhyay and Dyana C. Duarte and Ricardo L. S. Farias},
journal= {arXiv preprint arXiv:1907.09880},
year = {2019}
}
Comments
10 pages, 6 figures, replaced with updated version matching the published one