Hadronic physics with domain-wall valence and improved staggered sea quarks

TL;DR

This paper explores a hybrid lattice QCD approach combining Asqtad sea quarks with domain-wall valence quarks to improve the simulation of light dynamical quarks, presenting initial results for key nucleon properties.

Contribution

It introduces a hybrid simulation method using different quark formulations to address challenges in realistic lattice QCD simulations of light quarks.

Findings

Initial results for proton form factor

Initial results for nucleon axial coupling

Demonstrates feasibility of hybrid approach

Abstract

With the advent of chiral fermion formulations, the simulation of light valence quarks has finally become realistic for numerical simulations of lattice QCD. The simulation of light dynamical quarks, however, remains one of the major challenges and is still an obstacle to realistic simulations. We attempt to meet this challenge using a hybrid combination of Asqtad sea quarks and domain-wall valence quarks. Initial results for the proton form factor and the nucleon axial coupling are presented.