Counterterm resummation for 2PI-approximation in constant background
High Energy Physics - Phenomenology
2008-11-26 v3
Abstract
Explicit counterterm construction is presented in a symmetry breaking background for the 2PI effective action of the self-interacting one-component scalar field including skeleton diagrams to O(\lambda^2). The applied strategy is an extension of our treatment of the 2PI-Hartree approximation [G. Fejos, A. Patkos and Zs. Szep, Nucl. Phys. A803 (2008) 135]. The procedure is also applied to the O(N) model.
Cite
@article{arxiv.0806.2554,
title = {Counterterm resummation for 2PI-approximation in constant background},
author = {A. Patkos and Zs. Szep},
journal= {arXiv preprint arXiv:0806.2554},
year = {2008}
}
Comments
23 pages, 2 figures, typos corrected. Version published in Nucl. Phys. A