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Physical review D >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2241/89312
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| Title: | Nonperturbative O(a) improvement of Wilson quark action in three-flavor QCD with plaquette gauge action |
| Authors: | Yamada, N.
Aoki, S.
Fukugita, M.
Hashimoto, S.
Ishikawa, K-I.
Ishizuka, N.
Iwasaki, Y.
Kanaya, K.
Kaneko, T.
Kuramashi, Y.
Okawa, M.
Taniguchi, Y.
Tsutsui, N.
Ukawa, A.
Yoshié, T.
岩崎, 洋一 |
| Issue Date: | Mar-2005 |
| Publisher: | American Physical Society |
| Journal Title: | Physical review D |
| Volume: | 71 |
| Issue: | 5 |
| Start Page: | 054505 |
| DOI: | 10.1103/PhysRevD.71.054505 |
| Abstract: | We perform a nonperturbative determination of the O(a)-improvement coefficient cSW for the Wilson quark action in three-flavor QCD with the plaquette gauge action. Numerical simulations are carried out in a range of beta=12.0–5.2 on a single lattice size of 83×16 employing the Schrödinger functional setup of lattice QCD. As our main result, we obtain an interpolation formula for cSW and the critical hopping parameter Kc as a function of the bare coupling. This enables us to remove the O(a) scaling violation from physical observables in future numerical simulation in the wide range of beta. Our analysis with a perturbatively modified improvement condition for cSW suggests that finite volume effects in cSW are not large on the 83×16 lattice. We investigate Nf dependence of cSW by additional simulations for Nf=4, 2, and 0 at beta=9.6. As a preparatory step for this study, we also determine cSW in two-flavor QCD at beta=5.2. At this beta, several groups have carried out large-scale calculations of the hadron spectrum, while no systematic determination of cSW has been performed. |
| URI: | http://hdl.handle.net/2241/89312 |
| Rights: | ©2005 The American Physical Society |
| Text Version: | publisher |
| Appears in Collections: | Physical review D
岩崎 洋一 (Iwasaki Yoichi)
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