TY - JOUR
T1 - How do constituent quarks arise in QCD? Perturbation theory and the infra-red
AU - Bagan, E.
AU - Lavelle, M.
AU - McMullan, D.
AU - Fiol, B.
AU - Roy, N.
PY - 1997/1/1
Y1 - 1997/1/1
N2 - We motivate the use of dressed charges by arguing that such objects are needed to describe, e.g., constituent quarks and, in general, physical charged states in gauge theories. We give a short introduction to dressings in both QED and QCD. We put special emphasis on the infra-red properties of a moving dressed charge. To be more precise, we demonstrate that the one loop propagator of a relativistic dressed charge can be renormalized in the mass shell scheme with no infra-red divergence showing up.
AB - We motivate the use of dressed charges by arguing that such objects are needed to describe, e.g., constituent quarks and, in general, physical charged states in gauge theories. We give a short introduction to dressings in both QED and QCD. We put special emphasis on the infra-red properties of a moving dressed charge. To be more precise, we demonstrate that the one loop propagator of a relativistic dressed charge can be renormalized in the mass shell scheme with no infra-red divergence showing up.
U2 - 10.1016/S0920-5632(97)00042-X
DO - 10.1016/S0920-5632(97)00042-X
M3 - Article
SN - 0920-5632
VL - 54
SP - 208
EP - 212
JO - Nuclear Physics B - Proceedings Supplements
JF - Nuclear Physics B - Proceedings Supplements
IS - 1-2
ER -