Hi,
I am trying to use feyncalc to do an explicit sum over trace of the
generators of SU(3). Something like the following (which does not work).
-------------------------------------------------------------
In[1]:=
<<HighEnergyPhysics`FeynCalc`
In[2]:=
l1 = SUNT[a].SUNT[a]
In[3]:=
l2 = SUNTrace[l1]
Out[3]=
\!\(\*FormBox[
FractionBox[
SubscriptBox["\[Delta]",
RowBox[{
FormBox[
FormBox["a",
"TraditionalForm"],
"TraditionalForm"], "\[NoBreak]",
FormBox[
FormBox["a",
"TraditionalForm"],
"TraditionalForm"]}]], "2"], TraditionalForm]\)
---------------------------------------------------------------
How can I use feyncalc to actually do this explicit sum over trace for
SU(3) and give me output 4 at the end
thanks,
sameer
This archive was generated by hypermail 2b29 : 09/04/20-12:55:05 AM Z CEST