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arXiv:2608.07706

The Case for the Everett Multiverse

David Wallace

quant-phSubmitted Aug 7, 2026• Announced Aug 11, 2026• 0 citations
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Abstract

I give a non-technical presentation of the argument that quantum mechanics, in the form in which it is currently used, needs to be understood in many-worlds (Everettian) terms; the alternatives that have been discussed are at present not able to reproduce the full empirical content of the theory. This is a draft of a chapter for the forthcoming \emph{Blackwell Companion to Philosophy and the Multiverse (Klaas Kraay and Daniel Rubio, eds.) }

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26 pages

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I give a non-technical presentation of the argument that quantum mechanics, in the form in which it is currently used, needs to be understood in many-worlds (Everettian) terms; the alternatives that have been discussed are at present not able to reproduce the full empirical content of the theory.
This is a draft of a chapter for the forthcoming \emph{Blackwell Companion to Philosophy and the Multiverse (Klaas Kraay and Daniel Rubio, eds.) }