Tadpole Summation by Dyson-Schwinger Equations
High Energy Physics - Theory
2010-12-23 v1
Abstract
In quantum field theory with three-point and four-point couplings the Feynman diagrams of perturbation theory contain momentum independent subdiagrams, the ``tadpoles'' and ``snails''. With the help of Dyson-Schwinger equations we show how these can be summed up completely by a suitable modification of the mass and coupling parameters. This reduces the number of diagrams significantly. The method is useful for the organisation of perturbative calculations in higher orders.
Cite
@article{arxiv.hep-th/9603145,
title = {Tadpole Summation by Dyson-Schwinger Equations},
author = {Jens Kuester and Gernot Muenster},
journal= {arXiv preprint arXiv:hep-th/9603145},
year = {2010}
}
Comments
12 pages, use LaTeX2e with macro package feynmf