2003/01/01 by Takumi Doi, Noriyoshi Ishii, Makoto Oka +1 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.1143/ptps.151.161
published as Prog.Theor.Phys.Suppl. 151 (2003) 161-165 · 5 pages, Talk given at Tokyo-Adelaide Joint Workshop on Quarks, Astrophysics and Space physics, Tokyo, Japan, Jan.6 - Jan.10, 2003
openalex publication_date 2003/01/01 · arxiv created 2003/03/20 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study the quark-gluon mixed condensate g ≪q σµνGµνq >, using the SU(3)c lattice QCD with the Kogut-Susskind fermion at the quenched level. We generate 100 gauge configurations on the 164 lattice with β= 6.0, and perform the measurement of g ≪q σµνGµνq > at 16 points in each gauge configuration for each current quark mass of mq = 21, 36, 52 MeV. Using the 1600 data for each mq, we find m02 ≡ g ≪q σµνGµνq >/≪qq >≃2.5 GeV2 at the lattice scale of a-1 ≃2 GeV in the chiral limit. The large value of g ≪q σµνGµνq > suggests its importance in the operator product expansion in QCD. We study also chiral restoration at finite temperature in terms of g ≪q σµνGµνq >,which is another chiral order parameter. We present the lattice QCD results of g ≪q σµνGµνq > at finite temperature.