Paradox 9.2 | Bell’s theorem, 4.1
Bell’s theorem states that if Bell’s inequality is violated by experimental results, then the original quantum mechanics is correct in a sense that no local hidden variable theory is possible to replace it. Nature is either non-local or non-counterfactual-definite (or both).
1. The principle of locality:
There are two possible meanings of “locality” here.
1.1 The principle is correct in a sense that no causal influence can be faster than light.
1.2 The principle is incorrect in a sense that distant particles can be entangled. Correlation without causation can be instantaneous.
Assume that a pair of particles are entangled. Measuring one particle will collapse the wave function, which governs both particles, instantaneously.
2. Counterfactual definiteness:
2.1 It is correct in a sense that an object has a definite quantum state.
2.2 It is incorrect in a sense that, more often than not, the definite quantum state is not corresponding to a definite classical state (aka eigenstate). Instead, that quantum state is a superposition of different eigenstates.
The meaning of the phrase “counterfactual definiteness” in quantum mechanics or Bell’s theorem is not the same as that in the superdeterminism theory. They are two different concepts.
— Me@2012-11-24 11:21:01 AM
2012.11.25 Sunday (c) All rights reserved by ACHK
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