MBsums - a Mathematica package for the representation of Mellin-Barnes integrals by multiple sums

Abstract

Feynman integrals may be represented by the Mathematica packages AMBRE and MB as multiple Mellin-Barnes integrals. With the Mathematica package MBsums these Mellin-Barnes integrals are transformed into multiple sums.

Comments: Part of a talk presented by J. Gluza at the XXXIX International Conference of Theoretical Physics "Matter to the Deepest", Ustron, Poland, September 13-18, 2015. Extended version of the contribution to the proceedings in Acta Physica Polonica 46 (2015)