Modelling the quark propagator

TL;DR

This paper investigates the quark propagator using improved lattice actions to generate high-quality data, aiding in modeling hadron physics and enhancing understanding of QCD nonperturbative effects.

Contribution

It introduces improved lattice actions for more accurate quark propagator data and constructs ansätze for hadron modeling and QCD insights.

Findings

High-quality quark propagator data at small quark masses

Construction of ansätze for hadron calculations

Enhanced understanding of nonperturbative QCD effects

Abstract

The quark propagator is at the core of lattice hadron spectrum calculations as well as studies in other nonperturbative schemes. We investigate the quark propagator with an improved staggered action (Asqtad) and an improved gluon action, which provides good quality data down to small quark masses. This is used to construct ans\"{a}tze suitable for model hadron calculations as well as adding to our intuitive understanding of QCD.