Add a function for rewriting the amplitude in terms of GLIs

FeynCalc / feyncalc

Mathematica package for algebraic calculations in elementary particle physics.

https://feyncalc.github.io

GNU General Public License v3.0

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Add a function for rewriting the amplitude in terms of GLIs #178

Closed vsht closed 1 year ago

vsht commented 2 years ago

FCLoopApplyTopologyMappings alone is not sufficient to write the given amplitude as a linear combination of GLIs (or products thereof).

vsht commented 2 years ago

Sort of fixed for scalar amplitudes, but we also need a solution for the tensor decomposition (unless one is willing to use projectors)

vsht commented 1 year ago

Fixed with 76f0e98648a2051325426f08ccae6359f5a83e36 so that now one can also do tensor reductions on the output of FCLoopFindTopologies without switching to TID/FCMultiLoopTID.

Even though I still don't think that doing multiloop tensor reductions with Mathematica is a good idea...