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arXiv · hep-lat/0309071

Non-perturbative renormalization of the axial current with improved Wilson quarks

R. Hoffmann·F. Knechtli·J. Rolf·R. Sommer·U. Wolff
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Abstract

We present a new normalization condition for the axial current, which is derived from the PCAC relation with non-vanishing mass. Using this condition reduces the O(r_0 m) corrections to the axial current normalization constant Z_A for an easier chiral extrapolation in the cases, where simulations at zero quark-mass are not possible. The method described here also serves as a preparation for a determination of Z_A in the full two-flavor theory.

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R. Hoffmann, F. Knechtli, J. Rolf, R. Sommer, U. Wolff. 2003-09-15. Non-perturbative renormalization of the axial current with improved Wilson quarks. https://doi.org/10.1016/s0920-5632(03)02602-1

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