A possible cosmological effect on the quantum-to-classical transition

TL;DR

This paper proposes that cosmic expansion effects at microscopic scales could influence the quantum-to-classical transition, suggesting a fundamental size threshold based on Hubble velocities that separates quantum and classical regimes.

Contribution

It introduces a novel cosmological perspective on the quantum-classical boundary, linking cosmic expansion effects to the emergence of classical behavior in physical objects.

Findings

A calculation of recessional velocities within extended bodies.

A proposed size threshold for quantum-classical transition.

Implication of cosmic effects on fundamental physical limits.

Abstract

Although cosmic expansion at very small distances is usually dismissed as entirely inconsequential, these extraordinarily small effects may in fact have a real and significant influence on our world. A calculation suggests that the minute recessional velocities associated with regions encompassed by extended bodies may have a role in creating the distinction between quantum and classical behavior. Using the criterion that the uncertainty in position should be smaller than the size of an object together with estimates based on the range of Hubble velocities extending through the object lead to a threshold size that could provide a fundamental limit distinguishing the realm of objects governed by classical laws from those governed by quantum mechanics.