Non-ladder Extended Renormalization Group Analysis of the Dynamical Chiral Symmetry Breaking
High Energy Physics - Theory
2009-10-31 v2 High Energy Physics - Phenomenology
Abstract
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.
Keywords
Cite
@article{arxiv.hep-th/0002038,
title = {Non-ladder Extended Renormalization Group Analysis of the Dynamical Chiral Symmetry Breaking},
author = {Ken-Ichi Aoki and Kaoru Takagi and Haruhiko Terao and Masashi Tomoyose},
journal= {arXiv preprint arXiv:hep-th/0002038},
year = {2009}
}
Comments
18 pages, 30 eps file, 15 figures, LaTeX, slightly revised, references corrected, To be published in Prog. Theo. Phys