Quasiparticles and $Z(N)-$ lines in Hot Yang-Mills theories

TL;DR

This paper reviews the quasiparticle approach to hot Yang-Mills theories, emphasizing the role of Z(N)-lines and nonperturbative effects near the confinement transition, offering a refined understanding of the theory's behavior.

Contribution

It introduces a quasiparticle model incorporating Z(N)-lines and nonperturbative effects without requiring divergent quasiparticle masses.

Findings

Quasiparticles interact with background Z(N)-lines.

Nonperturbative effects are significant near the confinement transition.

The model describes the transition without divergent quasiparticle masses.

Abstract

In this talk we review, the quasiparticle description of the hot Yang-Mills theories, in which the quasiparticles propagate in (and interact with) a background field related to Z(N)-lines. We compare the present description with a more common one in which the effects of the Z(N)-lines are neglected. We show that it is possible to take into account the nonperturbative effects at the confinement transition temperature even without a divergent quasiparticle mass.