Cancellation of ladder graphs in an effective expansion

Details Cancellation of ladder graphs in an effective expansion Cancellation of ladder graphs in an effective expansion

1997-08-20

arxiv.org/abs/hep-ph/9708412v1

Phys.Rev. D57 (1998) 2631-2634

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 8 figures, LaTeX, uses epsf and revtex, also available at http://theory.uwinnipeg.ca/users/randy/webfiles/ladder.uu

Scientific paper

10.1103/PhysRevD.57.2631

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.

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