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Topological susceptibility in lattice QCD with two flavors of dynamical quarks
http://hdl.handle.net/10191/27658
1e9c1b53-b16e-4c59-af12-45780771c5ef
名前 / ファイル | ライセンス | アクション | |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-06-23 | |||||
タイトル | ||||||
タイトル | Topological susceptibility in lattice QCD with two flavors of dynamical quarks | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Topological susceptibility in lattice QCD with two flavors of dynamical quarks | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Khan, A.Ali
× Khan, A.Ali× Aoki, S.× Burkhalter, R.× Ejiri, S.× Fukugita, M.× Hashimoto, S.× Ishizuka, N.× Iwasaki, Y.× Kanaya, K.× Kaneko, T.× Kuramashi, Y.× Manke, T.× Nagai, K.I.× Okawa, M.× Shanahan, H.P.× Ukawa, A.× Yoshie, T.× CP-PACS, Collaboration |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We present a study of the topological susceptibility in lattice QCD with two degenerate flavors of dynamical quarks. The topological charge is measured on gauge configurations generated with a renormalization group improved gauge action and a mean field improved clover quark action at three values of β=6/g 2 with four sea quark masses at each β. The lattice spacings at these β ’s are a≈0.22, 0.16 and 0.11 fm at the physical up and down quark mass, which are fixed by the physical ρ meson mass. The study is supplemented by simulations of pure SU(3) gauge theory with the same gauge action at 5 values of β with lattice spacings 0.09 fm≲a≲0.27 fm. We employ a field-theoretic definition of the topological charge together with cooling. For the topological susceptibility in the continuum limit of pure SU(3) gauge theory we obtain χ 1/4 t =197 +13 -16 MeV where the error shows statistical and systematic ones added in quadrature. In full QCD χ t at heavy sea quark masses is consistent with that of pure SU(3) gauge theory. A decrease of χ t toward light quark masses, as predicted by the anomalous Ward-Takahashi identity for U(1) chiral symmetry, becomes clearer for smaller lattice spacings. The cross over in the behavior of χ t from heavy to light sea quark masses is discussed. | |||||
書誌情報 |
Physical Review D en : Physical Review D 巻 64, 号 11, p. 114501, 発行日 2001-10 |
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出版者 | ||||||
出版者 | American Physical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 15507998 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00773624 | |||||
DOI | ||||||
関連識別子 | ||||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/PhysRevD.64.114501 | |||||
権利 | ||||||
権利情報 | (C) 2001 American Physical Society | |||||
著者版フラグ | ||||||
値 | publisher |