A spin S particle goes through two successive Stern-Gerlach experiments, the second one with axe turned by an angle theta.(adsbygoogle = window.adsbygoogle || []).push({});

Is it a formula giving the probability of measuring y in the second device knowing that x has been measured in the first?

To be clear: for spin 1/2, we have the classical formulas:p(1/2|1/2)=cos²(theta/2) and p(-1/2|1/2)=sin²(theta/2).

I've found formulas for S=1.

I'm looking for a generalization for spin S. All I have found is that you have to use Clebsch-Gordan coefficients. Ok, I don't know how to do that. Please what is the formula? I guess it's a classical result.

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# Formula for a spin S in a SGE

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