Analysis of a quenched lattice-QCD dressed-quark propagator

By M. Bhagwat, M. Pichowsky, Craig D. Roberts, P. Tandy. 2003

136 citations recorded by the source corpus.

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; $|〈\overline{q}q〉|$ by a factor of 2 and ${f}_{\ensuremath{\pi}}$ by $30%.$

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7706729835e5193da1a68af73d44eb74be894d73

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. Guy F. de Téramond
2. A. Deur
3. S. Brodsky
4. Huey-Wen Lin
5. I. Cloet
6. C. Roberts
7. P. Kroll
8. V. Braun

Citations in the corpus

• Nonperturbative QCD coupling and its β function from light-front holography (2010, background): “, [43] Burkert and Ioffe [44] and Furui and Nakajima, [37] are seen to have a similar shape and magnitude.”
• STUDIES OF NUCLEON RESONANCE STRUCTURE IN EXCLUSIVE MESON ELECTROPRODUCTION (2012, result): “This is in qualitative agreement with the QCD lattice calculations and with Dyson-Schwinger equations [35, 36, 343] where the running quark mass is generated dynamically.”