Based on the U(4) strong interaction model, the behavior of the model at finite temperature is investigated. It is shown that, under high temperature, the dynamical breaking of gauge symmetry can be restored and the quark confinement can be melted away.
@article{arxiv.1612.07174,
title = {The U(4) QCD Model at Finite Temperature},
author = {Dan-Na Liu and Si-Zhao Huang and Dian-Fu Wang},
journal= {arXiv preprint arXiv:1612.07174},
year = {2016}
}