Automatic application of successive asymptotic expansions of Feynman diagrams

Abstract

We discuss the program EXP used to automate the successive application of asymptotic expansions to Feynman diagrams. We focus on the generation of the relevant subgraphs and the determination of the topologies for the remaining integrals. Both tasks can be solved by using backtracking-type recursive algorithms. In addition, an application of EXP is presented, where the integrals were calculated using the FORM packages MINCER and MATAD.

arXiv commentLatex, 5 pages, 2 figures using epsfig, talk given at the AIHENP 99 conference, Crete, April 1999. The complete paper, including figures, is also available via anonymous ftp at ftp://ttpux2.physik.uni-karlsruhe.de/ttp99/ttp99-22/ or via www at http://www-ttp.physik.uni-karlsruhe.de/Preprints/

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