Critical coupling for chiral symmetry breaking in QCD motivated models

Abstract

We determine the critical coupling constant above which dynamical chiral symmetry breaking occurs in a class of QCD motivated models where the gluon propagator has an enhanced infrared behavior. Using methods of bifurcation theory we find that the critical value of the coupling constant is always smaller than the one obtained for QCD.

submitted to Phys. Rev. D, 7 pages, 1 figure

References in corpus (3)

• Bethe-Salpeter Study of Vector Meson Masses and Decay Constants
• Quark propagator, instantons and gluon propagator
• Squeezed gluon vacuum and the global colour model of QCD

Cited by in corpus (4)

• The massive analytic invariant charge in QCD
• Infrared enhanced analytic coupling and chiral symmetry breaking in QCD
• Relation Between Chiral Susceptibility and Solutions of Gap Equation in Nambu--Jona-Lasinio Model
• Solution of coupled vertex and propagator Dyson-Schwinger equations in the scalar Munczek-Nemirovsky model