Hello Forum: My problem is that I need to use FourDivergence on quantities between Dirac spinors. For example, if I were analytically differentiating, I would find
FourDivergence[ScalarProduct[p,w]*SpinorUBar[p2,m]
.GS[w].SpinorU[p1,m], FV[w, a]]=
FV[p,a]*SpinorUBar[p2,m].GS[w].SpinorU[p1,m]
+ScalarProduct[p,w]*SpinorUBar[p2,m].GA[a].SpinorU[p1,m]
However, when doing this operation in FeynCalc, only the first of these terms arises----there is no differentiation inside the Dirac spinor piece. Is there a way around this? Thanks.
Barry Holstein
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