Full QCD light hadron spectrum from the CP-PACS

Abstract

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 ≈ 0.9, 1.3, and 2.5 GeV on 12 3 × 24, 16 3 × 32, and 24 3 × 48 lattices. Four sea quark masses having m PS/ m V ≈ 0.8-0.6 are simulated, for each of which hadron masses are evaluated for valence quark masses corresponding to m PS/ m V ≈ 0.8-0.5. Results for hadron and light quark masses are presented and compared with those obtained in quenched QCD.