Held, Carsten
(2023)
A Presupposition of Bell's Theorem.
[Preprint]
Abstract
The most prominent version of Bell’s theorem consists of the Bell-CHSH inequality and a quantum-mechanical example violating it. The inequality is shown to rest on the non-trivial presupposition that the values of elementary spin quantities are scalars, not, e.g., vectors. In the version considered, the theorem’s argument succeeds for scalars and fails for vectors. However, the reference to vector values can be motivated from the physics of spin. Hence, recognizing the presupposition suggests a critical reassessment of the theorem.
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