Singlet Free Energies of a Static Quark-Antiquark Pair

TL;DR

This paper investigates the singlet free energy of a static quark-antiquark pair at finite temperature in three-flavor QCD, analyzing thermodynamics near the phase transition and lattice scaling behaviors.

Contribution

It provides new lattice QCD results on the singlet free energy and thermodynamics of quark pairs at finite temperature with degenerate quark masses.

Findings

Singlet free energy studied at different temperatures.

Thermodynamics around the QCD phase transition analyzed.

Scaling behavior with lattice spacing and quark masses examined.

Abstract

We study the singlet part of the free energy of a static quark anti-quark pair at finite temperature in three flavor QCD with degenerate quark masses using $N_{\tau}=4$ and 6 lattices with Asqtad staggered fermion action. We look at thermodynamics of the system around phase transition and study its scaling with lattice spacing and quark masses.