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 $a^{-1}\approx 0.9$, 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 $m_{\mathrm{PS}}/m_{\mathrm{V}}\approx 0.8$--0.6 are simulated, for each of which hadron masses are evaluated for valence quark masses corresponding to $m_{\mathrm{PS}}/m_{\mathrm{V}}\approx 0.8$--0.5. Results for hadron and light quark masses are presented and compared with those obtained in quenched QCD.

LATTICE98(spectrum), 3 pages, 3 figures