Full QCD light hadron spectrum from the CP-PACS

We report on an on-going two-flavor full QCD study on CP-PACS using an RG-improved gauge action and a tadpole-improved SW quark action. Runs are made for three lattice spacings $a^{-1}\approx 0.9$, 1.3, and 2.5 GeV on ${12}^3\times 24$, ${16}^3\times 32$, and ${24}^3\times 48$ lattices. Four sea quark masses having $m_{\mathrm{P}\mathrm{S}}\mathrm{/}{m}_{\mathrm{V}}\approx 0.8$–0.6 are simulated, for each of which hadron masses are evaluated for valence quark masses corresponding to $m_{\mathrm{P}\mathrm{S}}\mathrm{/}{m}_{\mathrm{V}}\approx 0.8$–0.5. Results for hadron and light quark masses are presented and compared with those obtained in quenched QCD.