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

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 نشر من قبل Takashi Kaneko
 تاريخ النشر 2007
  مجال البحث
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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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