Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-04-19
Comput.Phys.Commun.177:879-893,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 10 figures, 1 table, in v2 typos in Eqn. 48 and Eqn. 57 corrected; the corresponding sample files are unchanged
Scientific paper
10.1016/j.cpc.2007.07.001
The Mathematica toolkit AMBRE derives Mellin-Barnes (MB) representations for Feynman integrals in d=4-2eps dimensions. It may be applied for tadpoles as well as for multi-leg multi-loop scalar and tensor integrals. AMBRE uses a loop-by-loop approach and aims at lowest dimensions of the final MB representations. The present version of AMBRE works fine for planar Feynman diagrams. The output may be further processed by the package MB for the determination of its singularity structure in eps. The AMBRE package contains various sample applications for Feynman integrals with up to six external particles and up to four loops.
Gluza Janusz
Kajda Krzysztof
Riemann Tord
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