Quenched QCD at finite temperature with overlap Fermions

TL;DR

This paper investigates quenched QCD at temperatures just above the phase transition, demonstrating chiral symmetry restoration and analyzing screening masses using overlap Fermions.

Contribution

It provides new insights into chiral symmetry restoration and screening masses in quenched QCD with overlap Fermions at finite temperature.

Findings

Zero modes are localized in the overlap operator.

Chiral symmetry is restored above the transition.

Screening masses approach ideal gas values.

Abstract

We study quenched QCD just above the phase transition temperature using overlap Fermions. Exact zero modes of the overlap operator are localized. Chiral symmetry is restored, as indicated by the behavior of the chiral condensate after subtracting the effects of zero modes. The vector and pseudo-scalar screening masses are close to ideal gas values.