Dyson-Schwinger equation constraints on the gluon propagator in BRST quantised QCD
arXiv:1801.09337 · doi:10.1016/j.physletb.2018.10.023
Abstract
The gluon propagator plays a central role in determining the dynamics of QCD. In this work we demonstrate for BRST quantised QCD that the Dyson-Schwinger equation imposes significant analytic constraints on the structure of this propagator. In particular, we find that these constraints control the appearance of massless components in the gluon spectral density.
8 pages; v2: matches published version