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 $a_{ r_0}\sim a_{ m_{ \rho}}$ in dynamical and (iii) coefficient of Coulomb term being $\alpha_{ N_f=0}<\alpha_{ N_f=2}$ at $a^{ -1}\sim$ 2 GeV.
Categories: hep-lat