Uncertainty relations for the realisation of macroscopic quantum superpositions and EPR paradoxes

TL;DR

This paper develops a unified framework using quantum uncertainty relations to establish criteria for demonstrating the EPR paradox and macroscopic superpositions, highlighting inconsistencies with realism assumptions.

Contribution

It introduces a unified approach based on uncertainty relations to derive criteria for EPR paradoxes and macroscopic superpositions, linking them through realism assumptions.

Findings

Criteria for EPR paradox and macroscopic superpositions derived

Unified approach clarifies the role of uncertainty relations

Highlights inconsistency with macroscopic and local realism

Abstract

We present a unified approach, based on the use of quantum uncertainty relations, for arriving at criteria for the demonstration of the EPR paradox and macroscopic superpositions. We suggest to view each criterion as a means to demonstrate an EPR-type paradox, where there is an inconsistency between the assumptions of a form of realism, either macroscopic realism (MR) or local realism (LR), and the completeness of quantum mechanics.