An Analysis of Stapp’s “A Bell-Type Theorem without Hidden Variables”

A Bell - type Theorem Without Hidden Variables ∗

It is shown that no theory that satisfies certain premises can exclude faster-than-light influences. The premises include neither the existence of hidden variables, nor counterfactual definiteness, nor any premise that effectively entails the general existence of outcomes of unperformed local measurements. All the premises are compatible with Copenhagen philosophy, and the principles and predic...

on Shimony ’ s “ An Analysis of Stapp ’ s ‘ A bell - type theorem without hidden variables ’ ”

Bell's Theorem without Hidden Variables

Bell's Theorem without Hidden Variables *

Experiments motivated by Bell’s theorem suggest that information is sometimes transferred over spacelike intervals, and claims have been made that the results of these experiments do have this implication. However, the theoretical basis for such claims is usually taken to be Bell’s Theorem, which shows only that if certain predictions of quantum theory are correct, and certain hidden-variables ...

Bell ’ s Theorem and Random Variables

Bell’s theorem states that quantum correlation function of two spins can not be represented as an expectation value of two classical random variables. Spin is described in Bell’s model by a single scalar random variable. We discuss another classical model of spin in which spin is described by a triple of classical random variables. It is shown that in this model the quantum correlation function...