Hadron spectroscopy and static quark potential in full QCD: A comparison of improved actions on the CP-PACS
Abstract
We present first results from a full QCD calculation on the CP-PACS, comparing various actions at a-1 1 GeV and mπ/m ≈ 0.7--0.9. We use the plaquette and a renormalization group improved action for the gluons, and the Wilson and the SW-Clover action for quarks. We find that significant improvements in the hadron spectrum results from improving the quarks, while the gluon improvement is required for a rotationally invariant static potential. An ongoing effort towards exploring the chiral limit in full QCD is described.
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