On the Impossibility of Covariant Nonlocal "hidden" Variables in Quantum Physics

TL;DR

This paper demonstrates that neither local nor nonlocal hidden variables can fully explain quantum correlations in a way that respects relativistic invariance, highlighting fundamental limits of hidden variable theories.

Contribution

It proves the impossibility of covariant nonlocal hidden variables in quantum physics, extending the understanding of quantum correlations beyond local models.

Findings

Local variables cannot explain quantum correlations.

Nonlocal variables cannot be covariant under relativistic transformations.

Quantum correlations defy hidden variable explanations respecting relativity.

Abstract

Local variables can't describe the quantum correlations observed in tests of Bell inequalities. Likewise, we show that nonlocal variables can't describe quantum correlations in a relativistic time-order invariant way.