Non-perturbative improvement of the axial current with three dynamical flavors and the Iwasaki gauge action

Abstract

We perform a non-perturbative determination of the improvement coefficient c_A to remove O(a) discretization errors in the axial vector current in three-flavor lattice QCD with the Iwasaki gauge action and the standard O$(a)$-improved Wilson quark action. An improvement condition with a good sensitivity to c_A is imposed at constant physics. Combining our results with the perturbative expansion, c_A is now known rather precisely for 1/a \gtrsim 1.6 GeV.

arXiv comment13 pages, 3 figures, 4 tables

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Cited by in corpus (8)

• FLAG Review 2019
• 2+1 Flavor Lattice QCD toward the Physical Point
• Chiral symmetry and the Yang--Mills gradient flow
• Physical Point Simulation in 2+1 Flavor Lattice QCD
• Charm quark system at the physical point of 2+1 flavor lattice QCD
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• Non-perturbative renormalization of quark mass in Nf=2+1 QCD with the Schroedinger functional scheme