Pre-equilibrium evolution of non-abelian plasma

TL;DR

This paper investigates the early-time evolution of a non-Abelian quark-antiquark plasma under an external chromoelectric field, emphasizing the significant role of color degrees of freedom and challenging the Abelian dominance assumption.

Contribution

It explicitly incorporates non-Abelian features into the Boltzmann equation to study plasma equilibration, revealing the importance of color dynamics in the process.

Findings

Color degrees of freedom dominate plasma dynamics.

Abelian dominance assumption is not justified.

Microscopic features naturally emerge in the model.

Abstract

We study the production and the equilibration of a non-Abelian $q\bar{q}$ plasma in an external chromoelectric field, by solving the Boltzmann equation with the non-Abelian features explicitly incorporated. We consider the gauge group $SU(2)$ and show that the colour degree of freedom has a major and dominant role in the dynamics of the system. It is seen that the assumption of the so called Abelian dominance is not justified. Finally, it is also shown that many of the features of microscopic studies of the system appear naturally in our studies as well.