Sep 9 – 13, 2019
Europe/Zurich timezone

On the choice of variables in IBP reductions

Sep 10, 2019, 9:30 AM
Chambre du Trésorier

Chambre du Trésorier


Jos Vermaseren


As part of a project to derive parametric reduction schemes automatically a
systematic search has been set up to determine 'good sets of variables'. It
turns out that both the ease of derivation of a scheme and its efficiency
depend very sensitively on the choice of variables. For some topologies
there can be thousands of such choices. I report here on this search and
the resulting automatic derivations of practical schemes. As an example I
use four loop massless propagator topologies, but the results are
applicable for more complicated reactions with fewer loops as well.

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