Perspective on rainbow-ladder truncation
G. Eichmann, R. Alkofer, I.C. Cloet, A. Krassnigg, C.D. Roberts
TL;DR
This paper reevaluates the use of rainbow-ladder truncation in QCD Dyson-Schwinger equations, suggesting that systematic corrections tend to decrease meson property predictions and prompting a reconsideration of its application.
Contribution
It offers a new perspective on the interpretation and limitations of rainbow-ladder truncation in QCD calculations.
Findings
Corrections to rainbow-ladder truncation generally reduce meson property results.
The study prompts a reassessment of the truncation's role in QCD studies.
Systematic improvements influence the accuracy of meson property predictions.
Abstract
Prima facie the systematic implementation of corrections to the rainbow-ladder truncation of QCD's Dyson-Schwinger equations will uniformly reduce in magnitude those calculated mass-dimensioned results for pseudoscalar and vector meson properties that are not tightly constrained by symmetries. The aim and interpretation of studies employing rainbow-ladder truncation are reconsidered in this light.
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