can you provide an explicit code example?
Am 10.10.2016 um 19:26 schrieb Sam:
> I am trying to evaluate matrix elements separately for the longitudinal and transverse polarizations of outgoing vectors, and this requires contracting against two separate matrices of the polarization sums. If I was evaluating the polarizations together, I would just do Contract[<<>>], but that doesn't work for what I want to do. So my question is: how do I assign Lorentz indices to these matrices, or otherwise contract these Lorentz tensors?
> Thanks for any help!
This archive was generated by hypermail 2b29 : 03/29/17-05:00:02 PM Z CEST