Abstract
A new type of gauge fixing of the Coulomb gauge domain wall fermion system that reduces the fluctuation of the effective running coupling and the effective mass of arbitrary momentum direction including the region outside the cylinder cut region is proposed and tested in the 163 × 32 × 16 gauge configurations of RBC/UKQCD collaboration. The running coupling at the lowest momentum point does not show infrared suppression and compatible with the experimental data extracted from the JLab collaboration. The source of the fluctuation of the effective mass near momentum p = 0.6 GeV region is expected to be due to the domain wall fermion zero modes.
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Furui, S. The Self-Dual Gauge Fields and the Domain Wall Fermion Zero Modes. Few-Body Syst 46, 221–228 (2009). https://doi.org/10.1007/s00601-009-0067-y
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DOI: https://doi.org/10.1007/s00601-009-0067-y