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Parallel Lives: A Local-Realistic Interpretation of "Nonlocal" Boxes
Gilles Brassard1,2, Paul Raymond-Robichaud1
1Département d'informatique et de recherche opérationnelle, Université de Montréal, Montréal, QC H3C 3J7, Canada.
Entropy (Basel, Switzerland)
|December 3, 2020
Summary
This study uses a thought experiment to show that local realism can violate Bell inequalities more than quantum mechanics. It challenges the idea that local realism is equivalent to local hidden variables, questioning quantum theory's completeness.
Area of Science:
- Quantum mechanics
- Foundations of physics
- Local realism
Background:
- The Einstein-Podolsky-Rosen (EPR) argument questioned the completeness of quantum theory.
- Local realism, the idea that physical properties are local and definite, is often associated with local hidden variables.
Purpose of the Study:
- To debunk the myth that local realism is equivalent to local hidden variables.
- To reinterpret the EPR argument in light of modern understanding.
- To explore the implications of a local-realistic universe for quantum theory's completeness.
Main Methods:
- A thought experiment in an imaginary, yet local and realistic, world.
- Analysis of Bell inequalities violations.
- Reinterpretation of the EPR argument.
Main Results:
- The imaginary world violates Bell inequalities more than quantum theory.
- Local realism can be separated from local hidden variables.
- The EPR argument's challenge to quantum theory's completeness is valid under local realism.
Conclusions:
- Local realism is not synonymous with local hidden variables.
- The completeness of quantum theory remains a valid question for those who believe in a local-realistic universe.
- The EPR paradox highlights fundamental questions about reality and quantum mechanics.
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