TY - JOUR
T1 - Infrared divergences in three-dimensional gauge theories
AU - Guendelman, E. I.
AU - Radulovic, Z. M.
PY - 1984/1/1
Y1 - 1984/1/1
N2 - The loop expansion in massless three-dimensional gauge theories develops infrared divergences starting at the two-loop level. However, we show that the divergences in QCD3 which arise through the three-loop level (g6) can be removed by using a residual gauge freedom in covariant gauges. Divergences in gauge-invariant amplitudes arise at g8 order, as shown explicitly for the Wilson loop. Massless scalar QED develops a gauge-invariant singularity at order g4, which can be canceled by changing the perturbative vacuum.
AB - The loop expansion in massless three-dimensional gauge theories develops infrared divergences starting at the two-loop level. However, we show that the divergences in QCD3 which arise through the three-loop level (g6) can be removed by using a residual gauge freedom in covariant gauges. Divergences in gauge-invariant amplitudes arise at g8 order, as shown explicitly for the Wilson loop. Massless scalar QED develops a gauge-invariant singularity at order g4, which can be canceled by changing the perturbative vacuum.
UR - http://www.scopus.com/inward/record.url?scp=1542508270&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.30.1338
DO - 10.1103/PhysRevD.30.1338
M3 - Article
AN - SCOPUS:1542508270
VL - 30
SP - 1338
EP - 1348
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 6
ER -