Interpolation of Dense and Sparse Rational Functions and other Improvements in FireFly

2020/04/30 by Jonas Klappert, Sven Yannick Klein, Fabian Lange · 1 citation
Computer Science · Physics and Astronomy · #cs.MS #cs.SC #hep-ph

paper · pdf · doi:10.1016/j.cpc.2021.107968

published as Comput. Phys. Commun. 264 (2021) 107968 · 28 pages, 10 tables, 1 figure

arxiv created 2021/05/03 · arxiv updated 2021/05/05

Abstract

We present the main improvements and new features in version 2.0 of the open-source C++ library FireFly for the interpolation of rational functions. This includes algorithmic improvements, e.g. a hybrid algorithm for dense and sparse rational functions and an algorithm to identify and remove univariate factors. The new version is applied to a Feynman-integral reduction to showcase the runtime improvements achieved. Moreover, FireFly now supports parallelization with MPI and offers new tools like a parser for expressions or an executable for the insertion of replacement tables.

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