Stable Chromomagnetic QCD Vacuum and Confinement

TL;DR

This paper demonstrates that a stable chromomagnetic vacuum in SU(2) Yang-Mills theory can model confinement in QCD, producing a linear quark-antiquark potential and estimating the deconfining temperature consistent with lattice results.

Contribution

It shows how the stable chromomagnetic vacuum leads to a confinement model in QCD with quantitative agreement for potential and deconfining temperature.

Findings

Linear potential coefficient k ~ 0.25 GeV^2 matches charmonium data.

Deconfining temperature estimates agree with lattice SU(2) results.

Stable chromomagnetic vacuum supports confinement mechanism.

Abstract

The stable chromomagnetic vacuum for SU(2) Yang-Mills theory found earlier is shown to give a model for confinement in QCD, using Wilson loop, and a linear potential (in the leading order) for quark-antiquark interaction. The coefficient $k$ in this potential is found to be $\sim 0.25 GeV^2$, in satisfactory agreement with non-relativistic potential model calculations for charmonium. At finite temperature, the real effective energy density found earlier is used to obtain estimates of the deconfining temperature agreeing reasonably with lattice study for SU(2).