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

T. Kaneko·S. Aoki·M. Della Morte·S. Hashimoto·R. Hoffmann·R. Sommer
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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.

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T. Kaneko, S. Aoki, M. Della Morte, S. Hashimoto, R. Hoffmann, R. Sommer. 2007-03-12. Non-perturbative improvement of the axial current with three dynamical flavors and the Iwasaki gauge action. https://doi.org/10.1088/1126-6708%2F2007%2F04%2F092

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