Screening in Two-dimensional QCD

TL;DR

This paper investigates the screening and confinement phenomena in two-dimensional QCD, demonstrating that screening dominates even with a small fermion mass, through semi-classical solutions and operator construction.

Contribution

It provides a detailed analysis of screening versus confinement in 2D QCD, emphasizing the role of matter field representations and semi-classical solutions.

Findings

Screening phase dominates in 2D QCD.

Screening persists even with small fermion mass.

Constructed operators for screened quarks.

Abstract

We discuss the issue of screening and confinement of external colour charges in bosonised two-dimensional quantum chromodynamics. Our computation relies on the static solutions of the semi-classical equations of motion. The significance of the different representations of the matter field is explicitly studied. We arrive at the conclusion that the screening phase prevails, even in the presence of a small mass term for the fermions. To confirm this result further, we outline the construction of operators corresponding to screened quarks.