DrChinese
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morrobay said:From the original paper : http://www.drchinese.com/David/Bell_Compact.pdf
(2) P (a,b) = ∫ dλp(λ) A (a,λ) B (b,λ) For locality condition.
Then with (13) A(a,λ) = - B (a,λ) For aligned detectors anti correlations ( see graph, post #84)
(2) is re written in (14) :
(14) P (a,b) = - ∫ dλp(λ) A(a,λ) A (b,λ) For realism condition.
How does (14) describe the realism condition and why is B in (2) replaced by A in (14) ?
Well, the Realism condition is the part just after (14) where it says: "It follows that c is another unit vector [in addition to a and b already referenced]". That's when Bell sets up the relationship between 3 observables. Those 3 can't simultaneously exhibit the Quantum Mechanical expectation value.