A fine-tuned model with backward conditional probabilities can reproduce EPR and GHZ correlations while preserving Statistical Independence and forbidding superluminal signaling, because the correlations are inserted into the hidden-variable distribution by hand.
A Mechanism for Entanglement?
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We propose that quantum entanglement is a special sort of selection artefact, explicable as a combination of (i) collider bias and (ii) a boundary constraint on the collider variable. We show that the proposal is valid for a special class of (`W-shaped') Bell experiments involving delayed-choice entanglement swapping, and argue that it can be extended to the ordinary (`V-shaped') case. The proposal requires no direct causal influence outside lightcones, and may hence offer a way to reconcile Bell nonlocality and relativity. The main argument is a detailed version of an approach previously outlined in arXiv:2404.13928 [quant-ph].
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Reproducing EPR correlations without superluminal signalling: backward conditional probabilities and Statistical Independence
A fine-tuned model with backward conditional probabilities can reproduce EPR and GHZ correlations while preserving Statistical Independence and forbidding superluminal signaling, because the correlations are inserted into the hidden-variable distribution by hand.