PIRSA:07090072

Subjective Probability and Many Worlds

Schack, R. (2007). Subjective Probability and Many Worlds . Perimeter Institute. https://pirsa.org/07090072

Schack, Ruediger. Subjective Probability and Many Worlds . Perimeter Institute, Sep. 22, 2007, https://pirsa.org/07090072 

          @misc{ pirsa_PIRSA:07090072,
            doi = {10.48660/07090072},
            url = {https://pirsa.org/07090072},
            author = {Schack, Ruediger},
            keywords = {},
            language = {en},
            title = {Subjective Probability and Many Worlds },
            publisher = {Perimeter Institute},
            year = {2007},
            month = {sep},
            note = {PIRSA:07090072 see, \url{https://pirsa.org}}
          }

Ruediger Schack University of London

Talk numberPIRSA:07090072
DOI10.48660/07090072
Collection
Talk Type Conference

Abstract

Probability is often regarded as a problem for the many-worlds interpretation: if all branches of the splitting wavefunction are equally real, what sense does it make to say that the branches have different probabilities? In the decision-theoretic approach due to Deutsch and Wallace, probabilities acquire a meaning through the preferences of a rational agent. This talk reviews the decision-theoretic approach to probability in classical physics and quantum mechanics and shows that its application to the many-world interpretation creates a new difficulty for the latter.