Abstract
We calculate the static quark and anti-quark potential both in quenched and two-flavor dynamical quark lattice QCD using DBW2 gauge and domain-wall quark actions. Lattice spacings from Sommer scale are determined. We find (i) mixing of excited states is different in between quenched and dynamical, (ii) lattice spacing a r 0 ∼ a m ρ in dynamical and (iii) coefficient of Coulomb term being α N f = 0 < α N f = 2 at a −1 ∼ 2 GeV .
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