Non-perturbative improvement of the axial current with three dynamical flavors and the Iwasaki gauge action
2007; Springer Nature; Volume: 2007; Issue: 04 Linguagem: Inglês
10.1088/1126-6708/2007/04/092
ISSN1127-2236
AutoresT. Kaneko, Sinya Aoki, Michele Della Morte, S. Hashimoto, Roland Hoffmann, Rainer Sommer,
Tópico(s)High-Energy Particle Collisions Research
ResumoWe perform a non-perturbative determination of the improvement coefficient cA 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 cA is imposed at constant physics. Combining our results with the perturbative expansion, cA is now known rather precisely for a−1 ≳ 1.6 GeV.
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