Everettian Mechanics with Hyperfinitely Many Worlds.

The present paper shows how one might model Everettian quantum mechanics using hyperfinitely many worlds. A hyperfinite model allows one to consider idealized measurements of observables with continuous-valued spectra where different outcomes are associated with possibly infinitesimal probabilities....

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Bibliographic Details
Published in:Erkenntnis Vol. 89; no. 4; pp. 1367 - 1387
Main Authors: Barrett, Jeffrey, Goldbring, Isaac
Format: Article
Published: Springer Nature Apr2024
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Online Access:View this record in EBSCOhost
Description
Summary:The present paper shows how one might model Everettian quantum mechanics using hyperfinitely many worlds. A hyperfinite model allows one to consider idealized measurements of observables with continuous-valued spectra where different outcomes are associated with possibly infinitesimal probabilities. One can also prove hyperfinite formulations of Everett's limiting relative-frequency and randomness properties, theorems he considered central to his formulation of quantum mechanics. Finally, this model provides an intuitive framework in which to consider no-collapse formulations of quantum mechanics more generally.