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ID 14489
本文ファイル
著者
CP-PACS, Collaboration
Ali Khan, A
Aoki, S
Aoki, Y
Burkhalter, R
Ejiri, S
Fukugita, M
Hashimoto, S
Ishizuka, N
Iwasaki, Y
Izubuchi, T
Kanaya, K
Kaneko, T
Kuramashi, Y
Manke, T
Nagai, K. I.
Noaki, J
Shanahan, H. P.
Taniguchi, Y
Ukawa, A
Yoshié, T
NDC
物理学
抄録(英)
We investigate the chiral properties of quenched domain-wall QCD (DWQCD) at the lattice spacings a-1≃1 and 2 GeV for both plaquette and renormalization-group (RG) improved gauge actions. In the case of the plaquette action we find that the quark mass defined through the axial Ward-Takahashi identity remains non-vanishing in the DWQCD chiral limit that the bare quark mass mf→0 and the length of the fifth dimension Ns→∞, indicating that chiral symmetry is not realized with quenched DWQCD up to a-1≃2 GeV. The behavior is much improved for the RG-improved gauge action: while a nonvanishing quark mass remains in the chiral limit at a-1≃1 GeV, the result at a-1≃2 GeV is consistent with an exponentially vanishing quark mass in the DWQCD chiral limit, indicating the realization of exact chiral symmetry. An interpretation and implications are briefly discussed.
掲載誌名
Physical Review D
63巻
開始ページ
114504
出版年月日
2001
出版者
The American Physical Society
ISSN
1550-7998
出版者DOI
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) 2001 The American Physical Society
関連情報URL
部局名
理学研究科