Wallace, David (2005) *Quantum Probability from Subjective Likelihood: improving on Deutsch's proof of the probability rule.* [Preprint]

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## Abstract

I present a proof of the quantum probability rule from decision-theoretic 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 decision-theoretic assumptions. This makes it easier to discuss the conceptual ideas involved in the proof, and to show that they are defensible.

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Item Type: | Preprint |
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Additional Information: | This is a revised version of my 2003 paper. It has a substantially improved proof of the Equivalence principle as well as a few more minor changes. |

Keywords: | Everett, Probability, Decision Theory |

Subjects: | General Issues > Decision Theory Specific Sciences > Physics > Quantum Mechanics |

Depositing User: | David Wallace |

Date Deposited: | 15 May 2005 |

Last Modified: | 07 Oct 2010 11:13 |

Item ID: | 2302 |

URI: | http://philsci-archive.pitt.edu/id/eprint/2302 |

### Available Versions of this Item

- Quantum Probability from Subjective Likelihood: improving on Deutsch's proof of the probability rule. (deposited 19 Dec 2003)
- Quantum Probability from Subjective Likelihood: improving on Deutsch's proof of the probability rule. (deposited 15 May 2005)
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- Quantum Probability from Subjective Likelihood: improving on Deutsch's proof of the probability rule. (deposited 15 May 2005)

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