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

T. Kaneko | Zendy; Sinya Aoki | Zendy; Michele Della Morte | Zendy; S. Hashimoto | Zendy; Roland Hoffmann | Zendy; Rainer Sommer | Zendy

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

Author(s) -

T. Kaneko,

Sinya Aoki,

Michele Della Morte,

S. Hashimoto,

Roland Hoffmann,

Rainer Sommer

Publication year - 2007

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2007/04/092

Subject(s) - physics , quark , gauge (firearms) , lattice gauge theory , lattice (music) , particle physics , quantum chromodynamics , lattice qcd , discretization , action (physics) , pseudovector , lattice constant , sensitivity (control systems) , perturbative qcd , mathematical physics , quantum electrodynamics , meson , gauge theory , mathematics , quantum mechanics , engineering , materials science , mathematical analysis , electronic engineering , acoustics , diffraction , metallurgy

We perform a non-perturbative determination of the improvement coefficientc_A to remove O(a) discretization errors in the axial vector current inthree-flavor lattice QCD with the Iwasaki gauge action and the standardO$(a)$-improved Wilson quark action. An improvement condition with a goodsensitivity to c_A is imposed at constant physics. Combining our results withthe perturbative expansion, c_A is now known rather precisely for 1/a \gtrsim1.6 GeV.Comment: 13 pages, 3 figures, 4 table

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