Name: Ricardo Rodriguez Date: 01/08/09-12:48:23 AM Z
Hi,
In advance I want to thank any help and sorry if my question is silly but I am new in FC.
Currently I am using FC to evaluate traces like:
d1[a_, b_, c_] :=
Tr[GSD[a].GAD[\[Alpha]].GSD[a +
b].GAD[\[Mu]].GSD[
a + b + c].GAD[\[Nu]].GSD[a +
b].GAD[\[Alpha]]]
and what I want is to replace any argument of the function with a four vector defined in the following way:
e*P[\mu]+f*k[\mu]
where e and f are scalars to be defined later. The above expression comes from a Sudakov-type decomposition of the original vectors.
Thanks again for any help.