title: Lattice analysis for the energy scale of QCD phenomena.
abstract: We formulate a new framework in lattice QCD to study the relevant energy scale of QCD phenomena. By considering the Fourier transformation of link variable, we can investigate the intrinsic energy scale of a physical quantity nonperturbatively. This framework is broadly available for all lattice QCD calculations. We apply this framework for the quark-antiquark potential and meson masses in quenched lattice QCD. The gluonic energy scale relevant for the confinement is found to be less than 1 GeV in the Landau or Coulomb gauge.
authors.affiliation: Department of Physics, Faculty of Science, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502, Japan.
authors.forename: Arata
authors.initials: A
authors.lastname: Yamamoto
authors.forename: Hideo
authors.initials: H
authors.lastname: Suganuma