The QCD equation of state at nonzero densities: lattice result

TL;DR

This paper computes the QCD equation of state at finite temperature and density using lattice simulations with a reweighting technique, providing insights into strongly interacting matter under extreme conditions.

Contribution

It introduces the application of the overlap improving multi-parameter reweighting method to determine QCD observables at nonzero chemical potentials on lattice.

Findings

Equation of state at finite densities obtained

Demonstrates effectiveness of reweighting technique

Provides data relevant for heavy-ion collision physics

Abstract

In this letter we give the equation of state of QCD at finite temperatures and densities. The recently proposed overlap improving multi-parameter reweighting technique is used to determine observables at nonvanishing chemical potentials. Our results are obtained by studying n_f=2+1 dynamical staggered quarks with semi-realistic masses on N_t=4 lattices.