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Signal-Locality in Hidden-Variables Theories

Antony Valentini
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Abstract

We prove that all deterministic hidden-variables theories, that reproduce quantum theory for a 'quantum equilibrium' distribution of hidden variables, predict the existence of instantaneous signals at the statistical level for hypothetical 'nonequilibrium ensembles'. This signal-locality theorem generalises yet another property of the pilot-wave theory of de Broglie and Bohm. The theorem supports the hypothesis that in the remote past the universe relaxed to a state of statistical equilibrium (at the hidden-variable level) in which nonlocality happens to be masked by quantum noise.

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Antony Valentini. 2002-02-09. Signal-Locality in Hidden-Variables Theories. https://doi.org/10.1016/s0375-9601(02)00438-3

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