Does Unitary Measurement Theory Lead to an Everettian Interpretation?

TL;DR

This paper explores how the theory of unitary premeasurement supports an Everettian interpretation of quantum mechanics, linking it to classical and subjective observation issues and proposing a more general, relative-state framework.

Contribution

It demonstrates that unitary premeasurement theory naturally leads to Everettian interpretation, unifying Bohr, von Neumann, and Everett perspectives in quantum measurement.

Findings

Unitary premeasurement implies Everettian interpretation.

Everett's relative-state theory is a continuation of Bohr and von Neumann.

A generalized, unfolded version of Everett's theory is proposed.

Abstract

Quantum-mechanical interpretation-related implications of the theory of unitary premeasurement [1] on complete measurement (objectification or collapse included) are investigated in the present article with a view to give an affirmative answer to the question in the title. It is argued that both Bohr's and von Neumann's ideas lead to those of Everett. Hence, the latter can be, in some sense, considered to be a continuation and elaboration of both former approaches. The importance of the idea of relativeness in Everett's theory is emphasized. To free the relative-state theory from its roots both of classicalness and of subjective observation in the argument of this study, the general or unfolded version of Everett's theory is sketched.