Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2000-02-05
Prog.Theor.Phys. 103 (2000) 815-832
Physics
High Energy Physics
High Energy Physics - Theory
18 pages, 30 eps file, 15 figures, LaTeX, slightly revised, references corrected, To be published in Prog. Theo. Phys
Scientific paper
10.1143/PTP.103.815
The order parameters of dynamical chiral symmetry breaking in QCD, the dynamical mass of quarks and the chiral condensates, are evaluated by numerically solving the Non-Perturbative Renormalization Group (NPRG) equations. We employ an approximation scheme beyond ``the ladder'', that is, beyond the (improved) ladder Schwinger-Dyson equations. The chiral condensates are enhanced compared with the ladder ones, which is phenomenologically favorable. The gauge dependence of the order parameters is fairly reduced in this scheme.
Aoki Ken-Ichi
Takagi Kaoru
Terao Haruhiko
Tomoyose Masashi
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