
TL;DR
This paper proposes a framework for objective realism in quantum mechanics using weak measurements and external noise, enabling a microscopic description of reality without violating causality.
Contribution
It introduces a method to construct an objective reality in quantum systems based on moments and cumulants, under conditions like linearity and causality, without requiring relativistic invariance.
Findings
Objective reality can be modeled with finite moments and cumulants.
Weak measurements combined with external noise enable microscopic realism.
The approach maintains causality and linearity without relativistic invariance.
Abstract
The question whether quantum measurements reflect some underlying objective reality has no generally accepted answer. We show that description of such reality is possible under natural conditions such as linearity and causality, although in terms of moments and cumulants of finite order and without relativistic invariance. The proposed construction of observations' probability distribution originates from weak, noninvasive measurements, with detection error replaced by some external finite noise. The noise allows to construct microscopic objective reality, but remains dynamically decoupled and hence unobservable at the macroscopic level.
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