Classical Many-Worlds Interpretation

TL;DR

This paper reconstructs quantum mechanics as a fully classical theory with multiple coexisting worlds, providing a minimalist yet equivalent interpretation to quantum field theory that explains probabilities, classicality, and complex numbers.

Contribution

It introduces a simple classical many-worlds interpretation of quantum mechanics that incorporates probabilities and macroscopic classicality without relying on radical new concepts.

Findings

Equivalent to quantum field theory

Provides a classical explanation for quantum probabilities

Explains the origin of complex numbers in quantum mechanics

Abstract

I present a simple baby-steps reconstruction of quantum mechanics as a fully classical theory. The most radical conceptual leap required is that there are many coexisting classical worlds, but even this is justified by the necessity of objective probabilities. These baby steps lead to a version of the many-worlds interpretation of quantum mechanics with built-in probabilities, built-in classicality at the macroscopic level, and an explanation of the complex numbers in quantum mechanics. Despite its simplicity and minimalism of radical concepts, this is not a toy model, being equivalent with quantum field theory.