From the Feynman-Schwinger representation to the non-perturbative relativistic bound state interaction
High Energy Physics - Phenomenology
2014-11-17 v2 High Energy Physics - Lattice
Abstract
We write the 4-point Green function in QCD in the Feynman-Schwinger representation and show that all the dynamical information are contained in the Wilson loop average. We work out the QED case in order to obtain the usual Bethe-Salpeter kernel. Finally we discuss the QCD case in the non-perturbative regime giving some insight in the nature of the interaction kernel.
Keywords
Cite
@article{arxiv.hep-ph/9703378,
title = {From the Feynman-Schwinger representation to the non-perturbative relativistic bound state interaction},
author = {Nora Brambilla and Antonio Vairo},
journal= {arXiv preprint arXiv:hep-ph/9703378},
year = {2014}
}
Comments
25 pages, RevTex, 3 figures included, typos corrected, to appear in Phys. Rev. D 56