A Universal Constraint on the Infrared Behavior of the Ghost Propagator in QCD
High Energy Physics - Theory
2021-09-22 v1 High Energy Physics - Phenomenology
Abstract
With proposing a unified description of the fields variation at the level of generating functional, we obtain a new identity for the quark-gluon interaction vertex based on gauge symmetry, which is similar to the Slavnov-Taylor Identities(STIs) based on the Becchi-Rouet-Stora-Tyutin transformation. With these identities, we find that in Landau gauge, the dressing function of the ghost propagator approaches to a constant as its momentum goes to zero, which provides a strong constraint on the infrared behaviour of ghost propagator.
Keywords
Cite
@article{arxiv.1708.07031,
title = {A Universal Constraint on the Infrared Behavior of the Ghost Propagator in QCD},
author = {Fei Gao and Can Tang and Yu-xin Liu},
journal= {arXiv preprint arXiv:1708.07031},
year = {2021}
}
Comments
4 pages, no figure