On the structure of two-point Green-functions at next-to-leading order in 1/Nc
High Energy Physics - Phenomenology
2008-11-26 v1 High Energy Physics - Theory
Abstract
The structure of the two-point QCD Green-functions is studied in this note in the limit of large number of colours. Their general form at next-to-leading order in 1/Nc is derived keeping the infinite resonance summation and without relying on a particular realization of the hadronic action. It is found that the contributions from chiral operators without resonance fields of order p^4 or higher are irrelevant for the computation of the correlators and, hence, they can be dropped at the beginning of the calculation. The possibility of a more general cancelation of these local terms at the level of the generating functional is discussed.
Cite
@article{arxiv.hep-ph/0702217,
title = {On the structure of two-point Green-functions at next-to-leading order in 1/Nc},
author = {J. J. Sanz-Cillero},
journal= {arXiv preprint arXiv:hep-ph/0702217},
year = {2008}
}
Comments
6 pages, 1 figure