QCD Equation of State at Finite Chemical Potentials for Relativistic Nuclear Collisions

TL;DR

This paper reviews the QCD equation of state at finite densities, emphasizing its importance in modeling dense nuclear matter in relativistic collisions, using lattice QCD and hadron resonance gas models.

Contribution

It introduces a comprehensive construction of the QCD equation of state incorporating multiple conserved charges for better collision modeling.

Findings

Interplay of conserved charges is crucial in dense nuclear matter analysis.

Different models of the QCD equation of state are compared.

Application to hydrodynamic simulations improves understanding of nuclear collisions.

Abstract

We review the equation of state of QCD matter at finite densities. We discuss the construction of the equation of state with net baryon number, electric charge, and strangeness using the results of lattice QCD simulations and hadron resonance gas models. Its application to the hydrodynamic analyses of relativistic nuclear collisions suggests that the interplay of multiple conserved charges is important in the quantitative understanding of the dense nuclear matter created at lower beam energies. Several different models of the QCD equation of state are discussed for comparison.