- #1
hideelo
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If I have a single spin 1/2 particle, I know that it's total spin in any direction with unit vector can be computed by using the operator σ•n where σ_i are the pauli matrices.
Suppose however I had a multiparticle system, is there a generalization of the pauli matrices (which let's call ρ_i) so that the the expectation value of ρ•n is the total spin in the n direction?
Suppose however I had a multiparticle system, is there a generalization of the pauli matrices (which let's call ρ_i) so that the the expectation value of ρ•n is the total spin in the n direction?