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PhysRevD.103.054505.pdf | 6.75 MB | Adobe PDF | 見る/開く |
タイトル: | Clear correlation between monopoles and the chiral condensate in SU(3) QCD |
著者: | Ohata, Hiroki Suganuma, Hideo |
著者名の別形: | 大畑, 宏樹 菅沼, 秀夫 |
キーワード: | Color confinement Lattice QCD Chiral symmetry Particles & Fields |
発行日: | Mar-2021 |
出版者: | American Physical Society (APS) |
誌名: | Physical Review D |
巻: | 103 |
号: | 5 |
論文番号: | 054505 |
抄録: | We study spontaneous chiral-symmetry breaking in SU(3) QCD in terms of the dual superconductor picture for quark confinement in the maximally Abelian (MA) gauge, using lattice QCD Monte Carlo simulations with four different lattices of 16⁴, 24⁴, 24³×6 at β=6.0 (i.e., the spacing a≃0.1 fm), and 32⁴ at β=6.2 (i.e., a≃0.075 fm), at the quenched level. First, in the confinement phase, we find Abelian dominance and monopole dominance in the MA gauge for the chiral condensate in the chiral limit, using the two different methods of (i) the Banks-Casher relation with the Dirac eigenvalue density and (ii) finite quark-mass calculations with the quark propagator and its chiral extrapolation. In the high-temperature deconfined phase, the chiral restoration is observed also for the Abelian and the monopole sectors. Second, we investigate local correlation between the chiral condensate and monopoles, which topologically appear in the MA gauge. We find that the chiral condensate locally takes a quite large value near monopoles. As an interesting possibility, the strong magnetic field around monopoles is responsible to chiral symmetry breaking in QCD, similarly to the magnetic catalysis. |
著作権等: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. |
URI: | http://hdl.handle.net/2433/276562 |
DOI(出版社版): | 10.1103/physrevd.103.054505 |
出現コレクション: | 学術雑誌掲載論文等 |
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