Infrared behaviour of massless QED in space-time dimensions 2 < d < 4
High Energy Physics - Theory
2009-11-10 v3 Superconductivity
High Energy Physics - Phenomenology
Abstract
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.
Cite
@article{arxiv.hep-th/0410120,
title = {Infrared behaviour of massless QED in space-time dimensions 2 < d < 4},
author = {Indrajit Mitra and Raghunath Ratabole and H. S. Sharatchandra},
journal= {arXiv preprint arXiv:hep-th/0410120},
year = {2009}
}
Comments
12 pages, uses axodraw.sty; added comments at the end, and one reference; to appear in Phys. Lett. B