Name: Simone Arnold Date: 07/25/07-09:58:16 AM Z
Hello,
I have defined some Tensors L_{mu nu} and W^{mu nu} for example like
Lmunu = FV[l, \[Rho]]*FV[k, \[Sigma]]
To get the cross section I used Contract[Lmunu*Wmunu] which
worked fine. The result now includes some scalar products like pa*k.
Now I would like to replace this scalar products by some number. How do
I do that? I tried to define e.g.
SP[pa,k]=1
before the Contract[…], but this did not work. Did I forget
anything, or is there any other way?
Thank you, Simone