Finite Local Models for the GHZ Experiment

TL;DR

This paper demonstrates that the ESR model can generate local finite models for the GHZ experiment, aligning with Szabó and Fine's toy models, and offers an alternative to nonlocal explanations in quantum mechanics.

Contribution

It introduces local finite models for the GHZ experiment derived from the ESR framework, providing a new perspective on quantum nonlocality.

Findings

Local finite models can replicate GHZ experiment results

ESR-based models align with Szabó and Fine's toy models

Supports local realism in quantum phenomena

Abstract

Some years ago Szab\'o and Fine proposed a {\it local} hidden variable theory for the GHZ experiment based on the assumption that "the detection efficiency is not (only) the effect of random errors in the detector equipment, but it is a more fundamental phenomenon, the manifestation of a predetermined hidden property of the particles". Szab\'o and Fine, however, did not provide a general approach to quantum phenomena which avoids nonlocality. Such an approach, based on the same assumption, was instead recently supplied by some of us and called {\it extended semantic realism} ({\it ESR}) model. We show here that one can extract from the ESR model several local finite models referring to the specific physical situation considered in the GHZ experiment, and that these models can be converted into the toy models for the GHZ experiment worked out by Szab\'o and Fine.