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arXiv · hep-lat/9710059

Hadron spectroscopy and static quark potential in full QCD: A comparison of improved actions on the CP-PACS

PACS Collaboration·S. Aoki·G. Boyd·R. Burkhalter·S. Hashimoto·N. Ishizuka·Y. Iwasaki·K. Kanaya·T. Kaneko·Y. Kuramashi·M. Okawa·A. Ukawa·T. Yoshié
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Abstract

We present first results from a full QCD calculation on the CP-PACS, comparing various actions at $a^{-1} \sim 1 GeV$ and $m_π/m_ρ\approx 0.7$--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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PACS Collaboration, S. Aoki, G. Boyd, R. Burkhalter, S. Hashimoto, N. Ishizuka, Y. Iwasaki, K. Kanaya, T. Kaneko, Y. Kuramashi, M. Okawa, A. Ukawa, T. Yoshié. 1997-10-16. Hadron spectroscopy and static quark potential in full QCD: A comparison of improved actions on the CP-PACS. https://doi.org/10.1016/s0920-5632(97)00728-7

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