Infrared behaviour of massless QED in space-time dimensions 2 < d < 4

Details Infrared behaviour of massless QED in space-time dimensions 2 < d < 4 Infrared behaviour of massless QED in space-time dimensions 2 < d < 4

2004-10-11

arxiv.org/abs/hep-th/0410120v3

Phys.Lett. B611 (2005) 289-296

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, uses axodraw.sty; added comments at the end, and one reference; to appear in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2005.02.049

We show that the logarithmic infrared divergences in electron self-energy and vertex function of massless QED in 2+1 dimensions can be removed at all orders of 1/N by an appropriate choice of a non-local gauge. Thus the infrared behaviour given by the leading order in 1/N is not modified by higher order corrections. Our analysis gives a computational scheme for the Amati-Testa model, resulting in a non-trivial conformal invariant field theory for all space-time dimensions 2 < d < 4.

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