QCD chiral symmetry restoration with a large number of quarks in a model with a confining propagator and dynamically massive gluons
arXiv:1409.7438 · doi:10.1016/j.physletb.2015.04.007
Abstract
Considering a QCD chiral symmetry breaking model where the gap equation contains an effective confining propagator and a dressed gluon propagator with a dynamically generated mass, we verify that the chiral symmetry is restored for a large number of quarks $n_{f}\approx 7-13$. We discuss the uncertainty in the results, that is related to the determination of the string tension ($K_{F}$), appearing in the confining propagator, and the effective gluon mass ($m_{g}$) at large $n_{f}$.
5 pages, 6 figures