Nonperturbative O(a) improvement of Wilson quark action in three-flavor QCD with plaquette gauge action
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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
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NDC |
物理学
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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.
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掲載誌名 |
Physical Review D
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巻 | 71巻
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開始ページ | 054505
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出版年月日 | 2005
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出版者 | The American Physical Society
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ISSN | 1550-7998
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言語 |
英語
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NII資源タイプ |
学術雑誌論文
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広大資料タイプ |
学術雑誌論文
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DCMIタイプ | text
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フォーマット | application/pdf
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著者版フラグ | publisher
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権利情報 | Copyright (c) 2005 The American Physical Society
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関連情報URL(IsVersionOf) | http://dx.doi.org/10.1103/PhysRevD.71.054505
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部局名 |
理学研究科
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