Name: Mikkel Bjoern Date: 02/22/16-09:47:03 AM Z


Hello,

I currently need FeynCalc in order to evaluate a number of traces.

Whenever I try to evaluate them, there is always a bunch of Eps[p1,p2,p3,p4] around that I know to vanish analytically, (but as there are hundreds of terms, cannot convince myself of just to ignore).

When I run this on a Mac with Mathematica v. 10.0.2 they vanish explicitly. When I run exactly the same notebook on a Windows machine with Mathematics 10.2.0 they appear.

Any clues on 1) what is happening and 2) whether I can helt FeynCalc reduces all these?

Best, Mikkel