Baryons with Ginsparg-Wilson quarks in a staggered sea
Brian C. Tiburzi
TL;DR
This paper calculates the masses and magnetic moments of octet baryons using a mixed lattice action, providing formulas to address lattice artifacts in simulations with Ginsparg-Wilson valence quarks and staggered sea quarks.
Contribution
It derives expressions for baryon masses and magnetic moments in a mixed lattice action framework, accounting for taste-symmetry breaking effects at next-to-leading order.
Findings
Taste-symmetry breaking does not occur at next-to-leading order.
Derived formulas help correct lattice artifacts in mixed-action simulations.
Provides theoretical tools for lattice QCD studies of baryons.
Abstract
We determine the masses and magnetic moments of the octet baryons in chiral perturbation theory formulated for a mixed lattice action of Ginsparg-Wilson valence quarks and staggered sea quarks. Taste-symmetry breaking does not occur at next-to-leading order in the combined lattice-spacing and chiral expansion. Expressions derived for masses and magnetic moments are required for addressing lattice artifacts in mixed-action simulations of these observables.
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