Name: Jorge Lopez Date: 07/16/14-04:35:03 AM Z

Dear All,
I have installed FeynCalc 8.2.0 in Mathematica 10.

I have tried:

In[30]:= Tr[DiracTrace[GA[a, b]]] // StandardForm

Out[30]//StandardForm= 16 Pair[LorentzIndex[a], LorentzIndex[b]]

The result should be

4 Pair[LorentzIndex[a], LorentzIndex[b]]

Traces of four gamma matrices also gives the same factor of four.

Am I doing something wrong?
I am sorry if I am doing a dummy question, I am new to FeynCalc.

Thanks in advance.
Regards,
Jorge López