Local Realism of Macroscopic Correlations

TL;DR

This paper demonstrates that macroscopic correlations, which cannot access microscopic details, can generally be explained by local realistic models due to the monogamy of Bell violations, applicable to all closed quantum systems.

Contribution

It establishes that macroscopic measurement correlations are compatible with local realism, extending the implications of Bell monogamy to practical macroscopic scenarios.

Findings

Macroscopic correlations can be modeled locally due to Bell monogamy.

Results apply to sharp measurements on closed quantum systems.

Supports local realism in macroscopic quantum phenomena.

Abstract

We show that for macroscopic measurements which cannot reveal full information about microscopic states of the system, the monogamy of Bell inequality violations present in quantum mechanics implies that practically all correlations between macroscopic measurements can be described by local realistic models. Our results hold for sharp measurement and arbitrary closed quantum systems.