Name: V. Shtabovenko Date: 06/21/20-02:38:31 PM Z

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I think it should work better with the new
FeynCalc 9.3.1.

GAD[\[Mu]].(GSD[p + q] + m).GAD[\[Mu]] // DiracSimplify // FCE
% // StandardForm

D m + 2 GSD[p] - D GSD[p] + 2 GSD[q] - D GSD[q]

Cheers,
Vladyslav

Am 20.06.20 um 14:41 schrieb BWL:
> I wanna contract
>
> GAD[\[Mu]].(GSD[p + q] + m).GAD[\[Mu]] // DiracSimplify
>
> but the result doesn’t contract $\mu$, but if I do it as
>
> GAD[\[Mu]].(GSD[p + q]).GAD[\[Mu]] +
> m GAD[\[Mu]].GAD[\[Mu]] // DiracSimplify
>
> then it works! But it’s too cumbersome! How to fix it? THX!
>
> Best regards!
>

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