you may first define SP[p,p]=m^2;
the function FCE could change p^2 to m^2
发送时间： 2007-06-01 02:31:29
主题： How do I make following substitution
Suppose I have
GS[p].GS[p]it gives me
(p_slash)(p_slash), then I take trace
Tr[%]it gives me
Now how can I tell mathematica to treat p^2 as m^2 ???
just typing %/. p^2- >m^2 or similar think i think does not work...
Pls tell me if I am not clear with my question
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