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Chiral symmetry restoration, the eigenvalue density of the Dirac operator, and the axial U(1) anomaly at finite temperature
http://hdl.handle.net/2241/118287
http://hdl.handle.net/2241/118287caac80cb-2bd2-415b-a20b-893bc05c2b4c
名前 / ファイル | ライセンス | アクション |
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PRD_86-11.pdf (440.7 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2013-02-12 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Chiral symmetry restoration, the eigenvalue density of the Dirac operator, and the axial U(1) anomaly at finite temperature | |||||
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 | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
著者 |
青木, 愼也
× 青木, 愼也× Fukaya, Hidenori× 谷口, 裕介 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We reconsider constraints on the eigenvalue density of the Dirac operator in the chiral-symmetric phase of two-flavor QCD at finite temperature. To avoid possible ultraviolet divergences, we work on a lattice, employing the overlap Dirac operator, which ensures the exact “chiral” symmetry at finite lattice spacings. Studying multipoint correlation functions in various channels and taking their thermodynamical limit (and then taking the chiral limit), we obtain stronger constraints than those found in the previous studies: both the eigenvalue density at the origin and its first and second derivatives vanish in the chiral limit of two-flavor QCD. In addition, we show that the axial U(1) anomaly becomes invisible in susceptibilities of scalar and pseudoscalar mesons, suggesting that the second-order chiral phase transition with the O(4) scaling is not realized in two-flavor QCD. Possible lattice artifacts when the nonchiral lattice Dirac operator is employed are briefly discussed. | |||||
言語 | en | |||||
書誌情報 |
en : Physical review D 巻 86, 号 11, p. 114512, 発行日 2012-12 |
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ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 2470-0010 | |||||
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 | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevD.86.114512 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | (c) 2012 American Physical Society | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Physical Society | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2241/118287 | |||||
識別子タイプ | HDL |