Name: V. Shtabovenko Date: 12/17/17-09:50:21 PM Z
You can do something like
ScalarProduct[p, q] /.
FCI[SP[p, q]] -> {p1, p2, p3, p4}.{q1, -q2, -q3,
-q4}
but in general FeynCalc works with Lorentz invariant quantities, not
single components of 4-vectors.
Am 11.12.2017 um 21:40 schrieb Karaki:
> I have a formula M^{\mu\nu} and want to contract it with a
four-vector p_\mu. I know the components of p_\mu. How do I do this
contraction?
>