このエントリーをはてなブックマークに追加
ID 14603
本文ファイル
著者
JLQCD, Collaboration
CP-PACS, Collaboration
Fukugita, M
Hashimoto, S
Ishizuka, N
Iwasaki, Y
Kanaya, K
Kaneko, T
Kuramashi, Y
Taniguchi, Y
Tsutsui, N
Ukawa, A
Yoshié, T
NDC
物理学
抄録(英)
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.
掲載誌名
Physical Review D
71巻
開始ページ
054505
出版年月日
2005
出版者
The American Physical Society
ISSN
1550-7998
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2005 The American Physical Society
関連情報URL(IsVersionOf)
http://dx.doi.org/10.1103/PhysRevD.71.054505
部局名
理学研究科