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9520

נשלח: 17:39 21/01/2010
על ידי Da-EiZ
s^2 is not an additive operator ?
and how do i know if an operator is additive , if its not trivial

Re: 9520

נשלח: 19:31 21/01/2010
על ידי dcohen
the generators of rotations are "additive"
because if we want to rotate each of the particles
we have to multiply rotation matrices

look at the lecture notes
where we discuss
what does it mean "J=L+S"

Then you can calculate S^2
which is not a generator