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arXiv · 1604.08767

Calculating four-loop massless propagators with Forcer

T. Ueda·B. Ruijl·J. A. M. Vermaseren
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Abstract

We present Forcer, a new FORM program for the calculation of four-loop massless propagators. The basic framework is similar to that of the Mincer program for three-loop massless propagators: the program reduces Feynman integrals to a set of master integrals in a parametric way. To overcome an ineludible complexity of the program structure at the four-loop level, most of the code was automatically generated or made with computer-assisted derivations. Correctness of the program has been checked with the recomputation of some quantities in the literature.

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T. Ueda, B. Ruijl, J. A. M. Vermaseren. 2016-04-29. Calculating four-loop massless propagators with Forcer. https://doi.org/10.1088/1742-6596/762/1/012060

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