Name: JamesG Date: 05/03/17-04:22:29 PM Z
Hi,
Trying to reset the LeviCivita sign conventions appears to me to have no effect when using the definitions above. For example I find that the input
Tr[[GA[a, b, c, d, 5]]
$LeviCivitaSign = 1;
Tr[GA[a, b, c, d, 5]]
gives
-4 I Eps[LorentzIndex[a], LorentzIndex[b],
LorentzIndex[c],
LorentzIndex[d]]
independent of whatever else I set $LeviCivitaSign to.
Is there some other way to fix the conventions in the latest version of Feyncalc (9.2); or is this affected by, say, a more recent version of Mathematica (I am currently using 10.1)?
James