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https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00007810
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Chiral properties of domain-wall quarks in quenched QCD
Khan, A. Ali
Aoki, S.
Aoki, Y.
Burkhalter, R.
Ejiri, S.
Fukugita, M.
Hashimoto, S.
Ishizuka, N.
Iwasaki, Y.
岩崎, 洋一
Izubuchi, T.
Kanaya, K.
Kaneko, T.
Kuramashi, Y.
Manke, T.
Nagai, K. I.
Noaki, J.
Okawa, M.
Shanahan, H. P.
Taniguchi, Y.
谷口, 裕介
Ukawa, A.
宇川, 彰
Yoshie, T.
open access
(c) 2001 The American Physical Society
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.
American Physical Society
2001-05
eng
journal article
VoR
http://hdl.handle.net/2241/89374
https://tsukuba.repo.nii.ac.jp/records/7810
https://doi.org/10.1103/PhysRevD.63.114504
2470-0010
AA00773624
Physical review D
63
11
114504
https://tsukuba.repo.nii.ac.jp/record/7810/files/PRD_63-11.pdf
application/pdf
262.4 kB
2013-12-18