The static quark potential in 2+1 flavour Domain Wall QCD from QCDOC

TL;DR

This paper presents ongoing measurements of the static quark potential in 2+1 flavor domain wall QCD using improved gauge actions, showing small discretization errors across various lattice spacings.

Contribution

It provides new lattice QCD results for the static quark potential with detailed analysis of discretization errors and scaling behavior.

Findings

Small scaling violations observed in dimensionless quantities

Lattice spacings range from 1.6 to 2.0 GeV

Consistent static quark potential measurements across ensembles

Abstract

We report our present status of on-going project on the measurement of the static quark potential in 2+1 flavour domain wall QCD with various improved gauge actions and couplings. Lattice spacing determined from Sommer scale on these ensembles are from 1.6 GeV to 2.0 GeV for $16^3 \times 32$ lattice with fifth dimension size 8. We also examine size of discretization error from scaling of a pair of dimensionless quantities, $(r_0 m_\pi)^2$ and $r_0 m_\rho$, and found small scaling violation.