Abstract
For a fixed Feynman graph one can consider Feynman integrals with all possible powers of propagators and try to reduce them, by linear relations, to a finite subset of integrals, the so-called master integrals. Up to now, there are numerous examples of reduction procedures resulting in a finite number of master integrals for various families of Feynman integrals. However, up to now it was just an empirical fact that the reduction procedure results in a finite number of irreducible integrals. It this paper we prove that the number of master integrals is always finite.
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Smirnov, A.V., Petukhov, A.V. The Number of Master Integrals is Finite. Lett Math Phys 97, 37–44 (2011). https://doi.org/10.1007/s11005-010-0450-0
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DOI: https://doi.org/10.1007/s11005-010-0450-0