QCD thermodynamics with 2+1 flavors at nonzero chemical potential

TL;DR

This paper investigates the thermodynamic properties of Quantum Chromodynamics (QCD) with 2+1 flavors at nonzero chemical potential, employing lattice simulations and Taylor expansion techniques to compute the equation of state and related quantities.

Contribution

It provides new lattice QCD results for thermodynamics at finite chemical potential using 2+1 flavor ensembles and higher-order Taylor expansion methods.

Findings

QCD equation of state at nonzero chemical potential calculated

Quark densities and susceptibilities determined

Results extend understanding of QCD thermodynamics in finite density regime

Abstract

We present results for the QCD equation of state, quark densities and susceptibilities at nonzero chemical potential, using 2+1 flavor asqtad ensembles with $N_t=4$. The ensembles lie on a trajectory of constant physics for which $m_{ud}\approx0.1m_s$. The calculation is performed using the Taylor expansion method with terms up to sixth order in $\mu/T$.