Cancellation of ladder graphs in an effective expansion
High Energy Physics - Phenomenology
2009-10-30 v1
Abstract
A resummation of ladder graphs is important in cases where infrared, collinear, or light-cone singularities render the loop expansion invalid, especially at high temperature where these effects are often enhanced. It has been noted in some recent examples of this resummation that the ladder graphs are canceled by other types of terms. In this note we show that this cancellation is quite general, and for the most part algebraic.
Keywords
Cite
@article{arxiv.hep-ph/9708412,
title = {Cancellation of ladder graphs in an effective expansion},
author = {M. Carrington and R. Kobes and E. Petitgirard},
journal= {arXiv preprint arXiv:hep-ph/9708412},
year = {2009}
}
Comments
14 pages, 8 figures, LaTeX, uses epsf and revtex, also available at http://theory.uwinnipeg.ca/users/randy/webfiles/ladder.uu