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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Raphael Bousso


PIRSA:18020079  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Black Holes, Quantum Information, and Unification
Speaker(s): Raphael Bousso
Abstract: The study of black holes has revealed a deep connection between quantum information and spacetime geometry. Its origin must lie in a quantum theory of gravity, so it offers a valuable hint in our search for a unified theory. Precise formulations of this relation recently led to new insights in Quant... read more
Date: 21/02/2018 - 2:00 pm
Series: Colloquium

PIRSA:18020051  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Universal Limit on Communication
Speaker(s): Raphael Bousso
Abstract: I derive a universal upper bound on the capacity of any communication channel between two distant systems. The Holevo quantity, and hence the mutual information, is at most of order EΔt/ℏ, where E the average energy of the signal, and Δt is the amount... read more
Date: 21/02/2018 - 11:00 am

PIRSA:11070032  ( MP4 Medium Res , MP3 , PDF ) Which Format?
The Measure Problem: Successes and Challenges
Speaker(s): Raphael Bousso
Abstract:
Date: 13/07/2011 - 9:50 am

PIRSA:09030010  ( MP4 Medium Res , MP3 , PDF ) Which Format?
The Multiverse Of String Theory, The Measure Problem, And The Cosmological Constant
Speaker(s): Raphael Bousso
Abstract: The vacuum landscape of string theory can solve the cosmological constant problem, explaining why the energy of empty space is observed to be at least 60 orders of magnitude smaller than several known contributions to it. It leads to a 'multiverse' in which every type of vacuum is produced infinitel... read more
Date: 18/03/2009 - 2:00 pm
Series: Colloquium
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