The QCD Equation of State - From Nuclear Physics to Perturbation Theory

TL;DR

This paper reviews the current understanding of the QCD equation of state across the phase diagram, highlighting key regions of interest, open questions, and research directions, especially at low temperatures and high densities.

Contribution

It provides a comprehensive overview of the QCD equation of state, emphasizing phenomenologically relevant regions and identifying critical open questions and future research directions.

Findings

Current understanding of QCD equation of state across phase diagram

Identification of regions with limited first principles tools

Highlighting open questions and research directions

Abstract

In this talk, we briefly review the current understanding of the behavior of the QCD equation of state throughout the phase diagram. Special emphasis is given to regions of phenomenological interest, and a number of important open questions as well as directions of ongoing research are pointed out. These include in particular the region of low temperatures and (moderately) high densities, where at the moment we have extremely few first principles tools available.