Comment on the GHZ variant of Bell's theorem without inequalities

TL;DR

This paper identifies a sign error in the GHZ variant of Bell's theorem, which undermines its claim that EPR argument premises are incompatible in multi-particle entangled states.

Contribution

It corrects a critical mistake in the GHZ proof, challenging previous conclusions about nonlocality in multi-particle quantum systems.

Findings

The sign mistake invalidates the original GHZ argument.

The inconsistency claimed by GHZ is not supported after correction.

The result impacts interpretations of quantum nonlocality.

Abstract

I point out a sign mistake in the GHZ variant of Bell's theorem, invalidating its claim that the premisses of the EPR argument are inconsistent for systems of more than two particles in entangled quantum states.