One-loop four-point function in noncommutative {\cal N}=4 Yang-Mills theory
High Energy Physics - Theory
2009-10-31 v1
Abstract
We compute the one-loop four-point function in {\cal N}=4 supersymmetric Yang-Mills theory with gauge group U(N). We perform the calculation in {\cal N}=1 superspace using the background field method and obtain the complete off-shell contributions to the effective action from planar and non planar supergraphs. In the low-energy approximation the result simplifies and we can study its properties under gauge transformations. It appears that the nonplanar contributions do not maintain the gauge invariance of the classical action.
Cite
@article{arxiv.hep-th/0010275,
title = {One-loop four-point function in noncommutative {\cal N}=4 Yang-Mills theory},
author = {Alberto Santambrogio and Daniela Zanon},
journal= {arXiv preprint arXiv:hep-th/0010275},
year = {2009}
}
Comments
LaTex, 14 pages, 2 figures