Clover improvement for stout-smeared 2+1 flavour SLiNC fermions: perturbative results

TL;DR

This paper calculates perturbative corrections for the SLiNC fermion action, including critical parameters and renormalization factors, to improve lattice QCD simulations with 2+1 flavors.

Contribution

It provides one-loop perturbative determinations of key improvement coefficients and renormalization factors for the SLiNC fermion action, enhancing simulation accuracy.

Findings

Calculated critical hopping parameter $$ and clover coefficient $c_{SW}$.

Determined non gauge invariant quark field improvement coefficient $c_{NGI}$.

Presented initial results for current renormalization factors.

Abstract

For the Stout Link Non-perturbative Clover (SLiNC) action we determine in one-loop lattice perturbation theory the critical hopping parameter $\kappa_c$ and the clover parameter $c_{SW}$ which is needed for $\mathcal{O}(a)$ improvement. Performing this calculation off-shell we are also able to compute the non gauge invariant quark field improvement coefficient $c_{NGI}$. Additionally, we present first results for the renormalization factors of the scalar, pseudoscalar, vector and axial vector currents. We discuss mean field improvement for the SLiNC action.