Self-locating Uncertainty and the Origin of Probability in Everettian Quantum Mechanics

  title={Self-locating Uncertainty and the Origin of Probability in Everettian Quantum Mechanics},
  author={Charles T. Sebens and S. Carroll},
  journal={The British Journal for the Philosophy of Science},
  pages={25 - 74}
  • C. SebensS. Carroll
  • Published 29 May 2014
  • Philosophy
  • The British Journal for the Philosophy of Science
A longstanding issue in attempts to understand the Everett (many-worlds) approach to quantum mechanics is the origin of the Born rule: why is the probability given by the square of the amplitude? Following Vaidman, we note that observers are in a position of self-locating uncertainty during the period between the branches of the wave function splitting via decoherence and the observer registering the outcome of the measurement. In this period, it is tempting to regard each branch as… 

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