Counterfactual restrictions and Bell’s theorem

Jonte R Hance*

*Corresponding author for this work

Research output: Contribution to journalReview article (Academic Journal)peer-review

Abstract

We show that the ability to consider counterfactual situations is a necessary assumption of Bell’s theorem, and that, to allow Bell inequality violations while maintaining all other assumptions, we just require certain measurement choices be counterfactually restricted, rather than the full removal of counterfactual definiteness. We illustrate how the counterfactual definiteness assumption formally arises from the statistical independence assumption. Counterfactual restriction therefore provides a way to interpret statistical independence violation different to what is typically assumed (i.e. that statistical independence violation means either retrocausality or superdeterminism). We tie counterfactual restriction to contextuality, and show the similarities to that approach.
Original languageEnglish
Article number122001
JournalJournal of Physics Communications
Volume8
Issue number12
DOIs
Publication statusPublished - 16 Dec 2024

Bibliographical note

Publisher Copyright:
© 2024 The Author(s). Published by IOP Publishing Ltd.

Keywords

  • statistical independence
  • Bell’s theorem
  • contextuality
  • quantum foundations
  • nonlocality

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