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When Worlds Collide: Quantum Probability From Observer Selection?

Authors
  • Hanson, Robin D.
Type
Published Article
Publication Date
Apr 07, 2003
Submission Date
Aug 14, 2001
Identifiers
DOI: 10.1063/1.1619652
arXiv ID: quant-ph/0108070
Source
arXiv
License
Unknown
External links

Abstract

In Everett's many worlds interpretation, quantum measurements are considered to be decoherence events. If so, then inexact decoherence may allow large worlds to mangle the memory of observers in small worlds, creating a cutoff in observable world size. Smaller world are mangled and so not observed. If this cutoff is much closer to the median measure size than to the median world size, the distribution of outcomes seen in unmangled worlds follows the Born rule. Thus deviations from exact decoherence can allow the Born rule to be derived via world counting, with a finite number of worlds and no new fundamental physics.

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