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ID 20315
本文ファイル
著者
QCD-TARO Collaboration
Ph. de Forcrand
M. García Pérez
Hashimoto, Takaaki
Hioki, Shinji
Matsufuru, Hideo
Miyamura, Osamu
Stamatescu, Ion-Olimpiu
Takaishi, Tetsuya
キーワード
SU(3) lattice gauge theory
Renormalization group flow
Improved action
抄録(英)
We investigate the renormalization group flow of SU(3) lattice gauge theory in two coupling space with β11 of plaquette and β12 of rectangular actions. Extensive numerical calculations of the RG flow are made in the fourth quadrant of the coupling space, i.e., β11 > 0 and β12 < 0. Swendsen's factor 2 blocking and Schwinger-Dyson method are used to find an effective action for the blocked gauge field. Resultant renormalization group flow runs quickly towards an attractive stream which has approximate line shape. This is a numerical evidence of the renormalized trajectory which locates close to the two coupling space. A model flow equation which incorporates a marginal coupling (asymptotic scaling term), an irrelevant coupling and a nonperturbative attraction toward strong coupling limit reproduces qualitatively the observed feature. We further examine scaling property of an action which is closer to the attractive stream than the currently used improved actions. It is found that the action shows excellent restoration of rotational symmetry even for coarse lattices with o ~ 0.4 fm.
掲載誌名
Nuclear Physics B
577巻
1-2号
開始ページ
263
終了ページ
278
出版年月日
2000-06-19
出版者
Elsevier
ISSN
0550-3213
NCID
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
author
権利情報
Copyright (c) 2000 Elsevier Science B.V.
関連情報URL
部局名
理学研究科
情報メディア教育研究センター