Quantum Probability from Subjective Likelihood: improving on Deutsch's proof of the probability rule
Abstract
I present a proof of the quantum probability rule from decisiontheoretic assumptions, in the context of the Everett interpretation. The basic ideas behind the proof are those presented in Deutsch's recent proof of the probability rule, but the proof is simpler and proceeds from weaker decisiontheoretic assumptions. This makes it easier to discuss the conceptual ideas involved in the proof, and to show that they are defensible.
 Publication:

arXiv eprints
 Pub Date:
 December 2003
 arXiv:
 arXiv:quantph/0312157
 Bibcode:
 2003quant.ph.12157W
 Keywords:

 Quantum Physics
 EPrint:
 23 pages. This is a modified version of my 2003 paper, which incorporates a completely rewritten and substantially improved proof of Equivalence as well as a few other more minor changes