Name: Duarte Date: 01/18/18-11:08:06 AM Z


Thanks; so, the first problem is almost solved, except that now
Feyncalc thinks that “Dimension -> D” is a Lorentz index; indeed,
I get structures like the following:

Overscript[\[Gamma], _]^b.Overscript[\[Gamma], _]^Dimension->D

The second problem didn’t change at all; I get exactly the same error
message.

Am I doing something wrong?

Best,
Duarte