A question for people who know about Bell inequalities: in the 1982 Aspect paper they present them in this form (a version of the CHSH inequality), with an experimental value (& violation) of S = 0.101pic.twitter.com/MR1CcBfO2q
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𝔞 𝔟𝔩𝔞𝕤𝔱 𝔣𝔯𝔬𝔪 𝔱𝕙𝖊 𝔭𝔞𝔰𝔱 𝕝𝕖𝕧𝕖𝕝 𝟛𝟚 𝕤𝕠𝕣𝕔𝕖𝕣𝕖𝕤𝕤, 𝕙𝕒𝕣𝕕𝕔𝕠𝕣𝕖 𝕞𝕠𝕕𝕖
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A question for people who know about Bell inequalities: in the 1982 Aspect paper they present them in this form (a version of the CHSH inequality), with an experimental value (& violation) of S = 0.101pic.twitter.com/MR1CcBfO2q
The more commonly stated form of the CHSH inequality is Q := E(AC)+ E(BC) + E(BD) - E(AD) <= 2, where A, B etc are the observables for the polarization (values +- 1). By my calculation, Q = 2+4S, so the experimental value in Aspect corresponds to Q ~ 2.404.
This is well short of the maximal violation (Q = 2 sqrt(2) ~ 2.8). But AFAICT the Aspect experiment uses polarization angles that should give the maximal violation What gives? Have I goofed? Or am I missing something? Is it the cryptic remark about solid angles & efficiencies?pic.twitter.com/w4uhbfiEq5
Original paper: https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.49.1804 …
I am quite puzzled by this. I half wonder if I've simply messed up in relating Q and S, but I've checked the calculation twice, and I don't see it.
Giving cuckoo’s egg vibes.
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