Nonladder extended renormalization group analysis of the dynamical chiral symmetry breaking

Feb, 2000
18 pages
Published in:
  • Prog.Theor.Phys. 103 (2000) 815-832
e-Print:
Report number:
  • KANAZAWA-00-01,
  • KANAZAWA-2000-01

Citations per year

200020062012201820244210
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.
  • quantum chromodynamics
  • symmetry breaking: chiral
  • dynamical symmetry breaking
  • quark: condensation
  • effective potential
  • renormalization group: nonperturbative
  • mass generation
  • dependence: gauge
  • perturbation theory: higher-order
  • ladder approximation