Lattice QCD with mixed actions

Abstract

We discuss some of the implications of simulating QCD when the action used for the sea quarks is different from that used for the valence quarks. We present exploratory results for the hadron mass spectrum and pseudoscalar meson decay constants using improved staggered sea quarks and HYP-smeared overlap valence quarks. We propose a method for matching the valence quark mass to the sea quark mass and demonstrate it on UKQCD clover data in the simpler case where the sea and valence actions are the same.

15 pages, 10 figures some minor modification to text and figures. Accepted for publication

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Cited by in corpus (8)

• Machine learning action parameters in lattice quantum chromodynamics
• Universality of Mixed Action Extrapolation Formulae
• The role of the double pole in lattice QCD with mixed actions
• Filtered overlap: speedup, locality, kernel non-normality and Z_A~1
• A Mixed Action Analysis of $\eta$ and ${\eta }^{\prime }$ Mesons
• Nucleon Mass with Highly Improved Staggered Quarks
• Topics in Effective Field Theory for Lattice QCD
• Results from overlap valence quarks on a twisted mass sea