Analyzing dynamical gluon mass generation
Abstract
We study the necessary conditions for obtaining infrared finite solutions from the Schwinger-Dyson equation governing the dynamics of the gluon propagator. The equation in question is set up in the Feynman gauge of the background field method, thus capturing a number of desirable features. Most notably, and in contradistinction to the standard formulation, the gluon self-energy is transverse order-by-order in the dressed loop expansion, and separately for gluonic and ghost contributions. Various subtle field-theoretic issues, such as renormalization group invariance and regularization of quadratic divergences, are briefly addressed. The infrared and ultraviolet properties of the obtained solutions are examined in detail, and the allowed range for the effective gluon mass is presented.
Cite
@article{arxiv.hep-ph/0610150,
title = {Analyzing dynamical gluon mass generation},
author = {Arlene C. Aguilar and Joannis Papavassiliou},
journal= {arXiv preprint arXiv:hep-ph/0610150},
year = {2008}
}
Comments
7 pages, 4 figures. Talk presented at "Infrared QCD in Rio" (IRQCD 2006), 5-9 June 2006, Rio de Janeiro, Brazil