Physics · 1964
On the Einstein Podolsky Rosen Paradox
John S. Bell
Overview
Bell turned the EPR debate from philosophy into experiment. He proved that any theory based on local hidden variables must obey an inequality that quantum mechanics violates — making the question of non-locality empirically decidable.
Made entanglement testable; later experiments confirmed quantum non-locality.
Key findings
Methods
A theorem-and-proof argument. Bell modelled correlated measurements on entangled particles under the assumption of locality and hidden variables, then derived a statistical inequality and compared it with the quantum prediction.
Keywords
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