Another determination of the quark condensate from an overlap action

TL;DR

This paper refines the measurement of the quark condensate using an overlap lattice action, converting it to a continuum scheme and providing a precise value at 2 GeV.

Contribution

It introduces a method to convert lattice-regulated condensate values to continuum schemes using the Hernandez technique, applied to an overlap action calculation.

Findings

Quark condensate value: (282(6) MeV)^3 at 2 GeV

Conversion method from lattice to continuum schemes

Application to overlap action with Wilson gauge at beta=5.9

Abstract

I use the technique of Hernandez, et al (hep-lat/0106011) to convert a recent calculation of the lattice-regulated quark condensate from an overlap action to a continuum-regulated number. I find Sigma(MSbar)(mu = 2 GeV) = (282(6) MeV)-cubed times (a-inverse/1766 MeV)-cubed from a calculation with the Wilson gauge action at beta=5.9.