2024-03-28T11:56:40Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00007770
2022-08-01T01:32:05Z
29:110
3:62:5598:84
Nonperturbative O(a) improvement of Wilson quark action in three-flavor QCD with plaquette gauge action
Yamada, N.
Aoki, S.
Fukugita, M.
Hashimoto, S.
Ishikawa, K-I.
Ishizuka, N.
Iwasaki, Y.
岩崎, 洋一
Kanaya, K.
Kaneko, T.
Kuramashi, Y.
Okawa, M.
Taniguchi, Y.
Tsutsui, N.
Ukawa, A.
宇川, 彰
Yoshie, T.
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 β=12.0-5.2 on a single lattice size of 8^3×16 employing the Schrodinger 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 8^3×16 lattice. We investigate Nf dependence of cSW by additional simulations for Nf=4, 2, and 0 at β=9.6. As a preparatory step for this study, we also determine cSW in two-flavor QCD at β=5.2. At this β, several groups have carried out large-scale calculations of the hadron spectrum, while no systematic determination of cSW has been performed.
journal article
American Physical Society
2005-03
application/pdf
Physical review D
5
71
054505
http://hdl.handle.net/2241/89312
2470-0010
AA00773624
https://tsukuba.repo.nii.ac.jp/record/7770/files/PRD_71-5.pdf
eng
https://doi.org/10.1103/PhysRevD.71.054505
(c) 2005 The American Physical Society
open access