Pion decay constant for the Kogut-Susskind quark action in quenched lattice QCD
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ID | 19257 |
本文ファイル | |
著者 |
JLQCD, Collaboration
Aoki, Sinya
Fukugita, Masataka
Hashimoto, Shoji
Ishikawa, Ken-Ichi
Ishizuka, Naruhito
Iwasaki, Yoichi
Kanaya, Kazuyuki
Kaneko, Takashi
Kaya, Shogo
Kuramashi, Yoshinobu
Onogi, Tetsuya
Tominaga, Shin-ichi
Tsutsui, Naoto
Ukawa, Akira
Yamada, Norikazu
Yoshie, Tomoteru
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抄録(英) | We present a study for the pion decay constant fπ in the quenched approximation to lattice QCD with the Kogut-Susskind (KS) quark action, with the emphasis given to the renormalization problems. Numerical simulations are carried out at the couplings β=6.0 and 6.2 on 323×64 and 483×64 lattices, respectively. The pion decay constant is evaluated for all KS flavors via gauge invariant and noninvariant axial vector currents with the renormalization constants calculated by both the nonperturbative method and perturbation theory. We obtain fπ=89(6) MeV in the continuum limit as the best value using the partially conserved axial vector current, which requires no renormalization. From a study for the other KS flavors we find that the results obtained with the nonperturbative renormalization constants are well convergent among the KS flavors in the continuum limit, confirming restoration of SU(4)A, flavor symmetry, while perturbative renormalization still leaves an apparent flavor breaking effect even in the continuum limit.
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掲載誌名 |
Physical Review D
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巻 | 62巻
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号 | 9号
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開始ページ | 094501-1
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終了ページ | 094501-15
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出版年月日 | 2000-10-02
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出版者 | American Physical Society
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ISSN | 1550-7998
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NCID | |
出版者DOI | |
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) 2000 The American Physical Society.
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関連情報URL | |
部局名 |
理学研究科
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