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Non-perturbative renormalization of the axial current with dynamical Wilson fermions

Michele Della Morte·Roland Hoffmann·Francesco Knechtli·Rainer Sommer·Ulli Wolff
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Abstract

We present a new normalization condition for the axial current, derived from the PCAC relation with non-vanishing quark mass. This condition is expected to reduce mass effects in the chiral extrapolation of the results for the normalization factor Z_A. The application to the two-flavor theory with improved Wilson fermions shows that this expectation is indeed fulfilled. Using the Schroedinger functional setup we calculate Z_A(g_0^2) as well as the vector current normalization factor Z_V(g_0^2) for beta = 6/g_0^2 >= 5.2.

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Michele Della Morte, Roland Hoffmann, Francesco Knechtli, Rainer Sommer, Ulli Wolff. 2005-05-31. Non-perturbative renormalization of the axial current with dynamical Wilson fermions. https://doi.org/10.1088/1126-6708%2F2005%2F07%2F007

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