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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:09070034  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Challenges for a quantum theory of the universe
Speaker(s): Andreas Albrecht
Abstract: I review three challenges faced by attempts to develop a quantum theory of the universe and examine possible relationships between them. 1) The clock ambiguity: The choice of time parameter leads to profound ambiguities. 2) The choice of state: I contrast the de Sitter equilibrium picture with eternal inflation. 3) The Born rule crisis: The born rule is insufficient to construct probabilities in a large multiverse without additional rules or assumptions (as discussed by Don Page).
Date: 18/07/2009 - 2:30 pm
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