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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:19040047  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Probability in many-world theories
Speaker(s): Mateus Araujo
Abstract:

A common criticism directed against many-world theories is that, being deterministic, they cannot make sense of probability. I argue that, on the contrary, deterministic theories with branching provide us the only known coherent definition of objective probability. I illustrate this argument with a toy many-worlds theory known as Kent's universe, and discuss its limitations when applied to the usual Many-Worlds interpretation of quantum mechanics.

I'll also argue that subjective probabilities are unproblematic in the many-worlds setting by showing how the usual decision-theoretical axioms apply there, and finish by showing that together with a proper definition of measurement they suffice to derive the Born rule.

Date: 16/04/2019 - 3:30 pm
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