Forces, fluxes and quasi-particles in hot QCD

TL;DR

This paper discusses the properties of hot QCD near the critical temperature, emphasizing the use of reduced actions and 3D simulations to accurately describe plasma observables, and explores the quasi-particle picture.

Contribution

It introduces an improved framework combining reduced actions and 3D simulations to better understand static plasma observables in hot QCD.

Findings

Hierarchy of reduced actions effectively describes static plasma observables

3D simulations above twice the critical temperature improve accuracy

Quasi-particle picture provides a unifying perspective

Abstract

These lectures start with a brief overview of salient features of the critical region of hot QCD. The main emphasis is on the accurate description of static plasma observables by the well-known hierarchy of reduced actions combined with 3D simulations above T\sim 2T_c. A striking pattern emerges, put in perspective by completing the quasi-particle picture