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

โœ Scribed by R. Hoffmann; F. Knechtli; J. Rolf; R. Sommer; U. Wolff

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
275 KB
Volume
129-130
Category
Article
ISSN
0920-5632

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โœฆ Synopsis

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(rom) corrections to the axial current normalization constant ZA 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 ZA in the full two-flavor theory.

๐Ÿ“œ SIMILAR VOLUMES

Non-perturbative renormalization of vect
Non-perturbative renormalization of vector and axial vector currents in quenched QCD for a renormalization group improved gauge action
โœ K. Ide; S. Aoki; M. Fukugita; N. Ishizuka; Y. Iwasaki; K. Kanaya; T. Kaneko; Y. ๐Ÿ“‚ Article ๐Ÿ“… 2004 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 269 KB

Renormalization constants of vector (2,) and axial-vector (ZA) currents are determined non-perturbatively in quenched QCD for an RG-improved gauge action and a tadpole-improved clover quark action using the Schr6dinger functional method. Meson decay constants f, and fT show much better scaling when