Name: V. Shtabovenko (email_not_shown)
Date: 09/20/17-06:05:21 AM Z

GaugeXi[Subscript[S[SequenceForm["Gen", 5]]]]

is just a gauge parameter related to the vector bosons in your model.
You can also see it in your test.gen


Am 19.09.2017 um 19:23 schrieb Francesco:
> My model is the following
> File gen
> File mod
> File pars
> where there is a real scalar Sk with multiderivative interactions.
> When I compute the amplitude for Sk Sk > Sk SK, In the exprssion of the amplitude, I get a strange term which is called "xi" Subscript[S[ SequenceForm["Gen", 5]]. What is it?
> This is the mathematica notebook
> Thank you very much!

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