Quark-Gluon Mixed Condensate g<qσμνGμνq> from Lattice QCD (格子場の理論スクール)

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概要

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• We study the quark-gluon mixed condensate g<q^^-σ_<μν>G_<μν>q>, which is another chiral order parameter, using the SU(3)_c lattice QCD with the Kogut-Susskind(KS) fermion at the quenched level. We generate 100 gauge configurations on the 16^4 lattice with β = 6.0, and measure g<q^^-σ_<μν>G_<μν>q> at 16 points in each gauge configuration for each current-quark mass of m_q = 21,36,52 MeV. From the 1600 data for each m_q, we find m^2_0 ≡ g<q^^-σ_<μν>G_<μν>q>/<q^^-q> ≃ 2.5 GeV^2 at the lattice scale of a^<-1> ≃ 2GeV in the chiral limit. The large value of g<q^^-σ_<μν>G_<μν>q> suggests its importance in the operator product expansion(OPE) in QCD. We also show our preliminary results of g<qσ_<μν>G_μν>q> at finite temperature.

• 素粒子論グループ 素粒子研究編集部の論文
• 2004-06-20

著者

• 岡 真

  Department Of Physics Tokyo Institute Of Technology

• DOI Takumi

  Graduate School of Pure and Applied Sciences, University of Tsukuba

• Hideo Suganuma

  Department Of Physics Kyoto University

• Suganuma Hideo

  Research Center For Nuclear Physics Osaka University

• Doi Takumi

  Dept. Of Phys. &astr. University Of Kentucky

• ISHII Noriyoshi

  Radiation Laboratory, RIKEN (The Institute of Physical and Chemical Research)

• Ishii N

  Ccs University Of Tsukuba

• Ishii Noriyoshi

  Radiation Laboratory Riken (the Institute Of Physical And Chemical Research)

• ISHII Noriyoshi

  CCS, University of Tsukuba

• ISHII Noriyoshi

  Center for Computational Sciences, Univ. of Tsukuba

• Oka Makoto

  Dept. of Phys., Tokyo Institute of Technology

• Suganuma Hideo

  Dept. Of Phys., Tokyo Institute of Technology

• Ishii Noriyoshi

  Center For Computational Science Tsukuba University

• 土井 琢身

  Dept. of Phys., Tokyo Institute of Technology

• DOI Takumi

  Dept. of Physics and Astronomy, Univ. of Kentucky:RIKEN BNL Research Center, Brookhaven National Lab.

• DOI Takumi

  Department of Physics, Tokyo Institute of Technology

• Doi Takumi

  Dept. of Phys., Tokyo Institute of Technology

• Ishii Noriyoshi

  Radiation Laboratory, RIKEN

• ISHII Noriyoshi

  Center for Computational Science, Tsukuba University

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