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Correlations in Spin-Singlet states

  • Thread starter BREAD
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  • #1
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Homework Statement


upload_2017-5-31_0-43-36.png


Homework Equations




The Attempt at a Solution


In (b), if particle B has up spin (x-axis), then A should have down-spin(x-axis). The problem ask the state by using lma,mb> state.
This state is valid only in z-axis, but how can i represent that state ??
I think the answer is the same with (a) regardless of the x-axis measurement
 

Answers and Replies

  • #2
vela
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You could try changing to the basis of eigenkets of ##J_x## and then changing back.
 

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