Analysis of a quenched lattice-QCD dressed-quark propagator

2003/04/01 by Mandar S. Bhagwat, M. S. Bhagwat, M. A. Pichowsky +3 · 188 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Mathematical physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Propagator #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quark #hep-lat #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1103/physrevc.68.015203

published in Physical Review C 68(1) (American Institute of Physics) · 9 pages, LaTeX2e, REVTEX4, 6 figures

arxiv created 2003/04/01 · openalex publication_date 2003/07/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Quenched lattice-QCD data on the dressed-quark Schwinger function can be correlated with dressed-gluon data via a rainbow gap equation so long as that equation's kernel possesses enhancement at infrared momenta above that exhibited by the gluon alone. The required enhancement can be ascribed to a dressing of the quark-gluon vertex. The solutions of the rainbow gap equation exhibit dynamical chiral symmetry breaking and are consistent with confinement. The gap equation and related, symmetry-preserving ladder Bethe-Salpeter equation yield estimates for chiral and physical pion observables that suggest these quantities are materially underestimated in the quenched theory; |〈qq〉| by a factor of 2 and f_\ensuremathπ by 30%.

Citations

• Axioms for Euclidean Green's functions II
• Gluon propagator on coarse lattices in Laplacian gauges
• Bethe-Salpeter equation and a nonperturbative quark-gluon vertex
• Concerning the quark condensate
• Deconfinement at finite chemical potential
• Confinement phenomenology in the Bethe-Salpeter equation
• Dyson-Schwinger equations and their application to hadronic physics
• Towards a mapping of the marginal : readings of art songs by Nigerian, Ghanaian, Egyptian and South African composers
• Survey of heavy-meson observables
• Modelling the quark propagator
• Axioms for Euclidean Green's functions

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• Chiral susceptibility and chiral phase transition in Nambu–Jona-Lasinio model
• Tracing masses of ground-state light-quark mesons
• Results from theN* Program at Jefferson Lab
• Effects of a dressed quark-gluon vertex in vector heavy-light mesons and theory average of theBc*meson mass
• Comments on the compatibility of thermodynamic equilibrium conditions with lattice propagators
• Color superconductivity in the strong-coupling regime of Landau gauge QCD
• Hadronic unquenching effects in the quark propagator
• DSE inspired model for the pion's valence dressed-quark GPD
• Perspective on the Origin of Hadron Masses
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