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

M. Lüscher; P. Weisz

doi:10.1016/0550-3213(96)00448-8

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arXiv · hep-lat/9606016

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

M. Lüscher·P. Weisz

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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.

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M. Lüscher, P. Weisz. 1996-06-26. O(a) improvement of the axial current in lattice QCD to one-loop order of perturbation theory. https://doi.org/10.1016/0550-3213(96)00448-8

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