On the Sharpness of Localization of Individual Events in Space and Time

TL;DR

This paper investigates the limits of localizing individual quantum events in space and time, emphasizing the need for an additional principle of random realization beyond decoherence and coarse graining.

Contribution

It highlights the insufficiency of decoherence and coarse graining alone for event localization, proposing the necessity of a random realization principle.

Findings

Decoherence and coarse graining are not enough for consistent event localization.

A new principle of random realization is essential for understanding quantum events.

The paper clarifies the conceptual bridge between quantum states and real phenomena.

Abstract

The concept of event provides the essential bridge from the realm of virtuality of the quantum state to real phenomena in space and time. We ask how much we can gather from existing theory about their localization and point out that decoherence and coarse graining -- though important -- do not suffice for a consistent interpretation without the additional principle of random realization.