Herding Shr\"odinger's Suppos\'ed Cat. How the Classical World Emerges from the Quantum Universe

TL;DR

This paper explains how classical states with definite positions and momenta emerge from the quantum universe due to limited measurement resolution, preventing the observation of superpositions.

Contribution

It demonstrates that limited measurement resolution explains the absence of superpositions, elucidating the emergence of classicality from quantum mechanics.

Findings

Limited measurement resolution prevents observation of superpositions.

Pointer states correspond to definite positions and momenta.

Classical world emerges from quantum due to observational constraints.

Abstract

The pointer states and preferred basis of the classical world are that of definite positions and momenta. Here it is shown that the reason for the absence of superposition states is the limited resolution with which observations or measurements are made.