Dressed Quark Propagator at Finite Temperature in the Schwinger-Dyson Approach with the Rainbow Approximation : Exact Numerical Solutions and Their Physical Implication
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概要
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The Schwinger-Dyson equation for the quark in the rainbow approximation at finite temperature (T) is solved numerically without introducing any ansatz for the dressed quark propagator. The dynamical quark mass function and the wave function renormalization are found to have non-trivial dependence on the three momentum, Matsubara frequency and temperature. The critical temperature of the chiral phase transition (T_c) and the T dependence of the quark condensate are strongly affected by the wave function renormalization. It is also found that the system is not a gas of free quarks, but a strongly interacting system of quarks and gluons, even in the chirally symmetric phase.
- 一般社団法人日本物理学会の論文
- 2002-02-25
著者
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池田 高志
東京工業大学大学院理工学研究科
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Ikeda Takashi
Department of Biological Sciences, Graduate School of Science, University of Tokyo
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