Scaling study of dynamical smeared-link clover fermions

TL;DR

This paper introduces a framework for lattice QCD calculations using improved actions and stout-link fermions, demonstrating a reliable scaling region suitable for large-scale phenomenological studies of N_f=2+1 QCD.

Contribution

It provides a detailed scaling study of the baryon spectrum with a new combination of improved gluon and fermion actions, validating their effectiveness for large-scale QCD simulations.

Findings

Scaling region extends to a<0.16fm

Action and algorithm are suitable for large-scale N_f=2+1 QCD studies

Efficient HMC/RHMC algorithm developed

Abstract

We present a framework for phenomenological lattice QCD calculations which makes use of a tree level Symanzink improved action for gluons and stout-link Wilson fermions. We give details of our efficient HMC/RHMC algorithm and present a scaling study of the low-lying N_f=3 baryon spectrum. We find a scaling region that extends to a~<0.16fm and conclude that our action and algorithm are suitable for large scale phenomenological investigations of N_f=2+1 QCD. We expect this conclusion to hold for other comparable actions.