The 1/N expansion method in quantum field theory
High Energy Physics - Theory
2015-12-22 v1 Nuclear Theory
Abstract
The motivations of the 1/N expansion method in quantum field theory are explained. The method is first illustrated with the O(N) model of scalar fields. A second example is considered with the two-dimensional Gross-Neveu model of fermion fields with global U(N) and discrete chiral symmetries. The case of QCD is briefly sketched.
Cite
@article{arxiv.1512.06784,
title = {The 1/N expansion method in quantum field theory},
author = {H. Sazdjian},
journal= {arXiv preprint arXiv:1512.06784},
year = {2015}
}
Comments
26 pages, 13 figures. An introductory lecture given at the third International School "Symmetry in integrable systems and nuclear physics", 3-13 July 2013, Tsakhkadzor, Armenia