Bell-EPR Correlations within Local Quantum Theory

TL;DR

This paper develops a local unitary theory of Bell-EPR measurements, demonstrating that decoherence occurs locally at detectors and confirming Bell-EPR correlations without invoking non-locality.

Contribution

It introduces a fully local framework for Bell-EPR measurements, emphasizing local decoherence and measurement processes, contrasting with non-local interpretations.

Findings

Decoherence occurs locally at each detector upon photon absorption.

Local measurement outcomes confirm Bell-EPR correlations.

The theory maintains locality while reproducing known quantum correlations.

Abstract

We present a local unitary theory of a Bell-EPR measurement, starting with the premeasurement filtering of the individual photon polarizations and extending through the detection process involving four photodetectors, two at each receiving station. The essential feature is that decoherence occurs locally and independently with each detector upon its absorption of a photon. Communication between observers after they read their local outcomes confirms the known Bell-EPR correlations. This theory is manifestly local, but there exist other formulations, and interpretations, that are non-local.