EPR argument - possible outcomes

benedwards2020

Determine the possible outcomes of the measurement Sz for the two electrons

[tex]\psi = \frac{1}{2} (\psi_{+}(A)\psi_{-}(B)-\psi_{+}(A)\psi_{-}(B))[/tex]


3. The attempt at a solution

Now I know how to work out the outcomes for each of the pairs, but what I'm not sure about is how to handle the minus sign in between the two pairs.

Do I use the minus sign as I would in any other calculation to give me possible outcomes of

Sz(A) = +h/2, Sz(B) = -h/2
Sz(A) = -h/2, Sz(B) = +h/2

Or do I ignore the minus sign to give me

Sz(A) = +h/2, Sz(B) = -h/2
Sz(A) = +h/2, Sz(B) = -h/2

I'm having difficulty finding examples on the internet for this sort of problem so any helpful links would also be appreciated

many thanks