O(a) improvement of the axial current in lattice QCD to one-loop order of perturbation theory

Abstract

The conservation of the isovector axial current in lattice QCD with massless Wilson quarks is studied to one-loop order of perturbation theory. Following a strategy described in a previous publication, the O($a$) counterterm required for on-shell improvement of the current is computed. We also confirm an earlier result of Wohlert for the coefficient in front of the SW term in the improved action.

38 pages, postscript file

References in corpus (4)

• Chiral symmetry and O(a) improvement in lattice QCD
• Non-perturbative O(a) improvement of lattice QCD
• Non-perturbative determination of the axial current normalization constant in O(a) improved lattice QCD
• One-loop renormalization of the QCD Schrödinger functional

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