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D.15.13 pfd_lib
- Library:
- pfd.lib
- Purpose:
- Multivariate Partial Fraction Decomposition
- Author:
- Marcel Wittmann, e-mail: mwittman@mathematik.uni-kl.de
- Overview:
- This Library implements an algorithm based on the work of E. K. Leinartas to
write rational functions in multiple variables as a sum of functions with
"smaller" numerators and denominators.
This can be used to shorten the IBP reduction coefficients of multi-loop Feynman
integrals. For this application,
we also provide a procedure that applies the algorithm to all entries of a
matrix of rational functions given as one (possibly very big) txt-file.
If you use the library pfd.lib, please cite the corresponding paper
[J. Boehm, M. Wittmann, Z. Wu, Y. Xu, Y. Zhang: 'IBP reduction coefficients
made simple'] (preprint 2020).
Procedures:
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