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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C11010 - Holographic Cosmology v2.0 - 2011PODCAST Subscribe to podcast

Holographic Cosmology v2.0

Organizer(s):

Collection URL: http://pirsa.org/C11010

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Opening Remarks
Speaker(s): Leonard Susskind
Abstract:
Date: 21/06/2011 - 9:00 am

Holographic multiverse and the measure problem
Speaker(s): Alex Vilenkin
Abstract: We explore the duality, conjectured in earlier work, between the wave function of the multiverse and a 3D Euclidean field theory on the future boundary of spacetime. We propose that a measure for the multiverse, which is needed in order to extract quantitative probabilistic predictions, can be deriv... read more
Date: 21/06/2011 - 9:30 am

Inside the horizon with holographic Wilsonian RG
Speaker(s): Hong Liu
Abstract:
Date: 21/06/2011 - 11:00 am

Bubbles of nothing and the big bang
Speaker(s): Adam Brown
Abstract: TBA
Date: 21/06/2011 - 11:50 am

A de Sitter Farey Tail
Speaker(s): Alexander Maloney
Abstract: We compute the partition function of quantum Einstein gravity in three dimensional de Sitter space. The Euclidean path integral is formulated as a sum over geometries, including both perturbative loop and non-perturbative instanton corrections coming from geometries with non-trivial topology. These ... read more
Date: 21/06/2011 - 3:00 pm

Lessons on Quantum Supergravity from Six-Dimensions
Speaker(s): Daniel Park
Abstract: Six dimensional (1, 0) supergravity theories have received recent attention due to the fact that the strong constraints coming from anomalies severely restrict the theory. These constraints are restrictive enough that it is possible to get a rather good handle on the space of theories that do not ex... read more
Date: 21/06/2011 - 3:50 pm

The semiclassical wavefunction of the universe near de Sitter space
Speaker(s): Juan Maldacena
Abstract: We make some remarks about the semiclassical wavefunction of the universe around de-Sitter space. In five dimensional gravity with a positive cosmological constant it is possible to compute the full semiclassical measure for arbitrary geometries at superhorizon scales. In four dimensions, the same c... read more
Date: 21/06/2011 - 5:00 pm

The Hidden Phase Space of our Universe
Speaker(s): Erik Verlinde
Abstract: By combining insights from black holes and string theory we argue for the existence of a hidden phase space associated with an underlying fast dynamical system, which is largely invisible from a macroscopic point of view. The dynamical system is influenced by slow macroscopic observables, such as po... read more
Date: 22/06/2011 - 9:00 am

Predictions from geometric cutoffs in Eternal Inflation
Speaker(s): Benjamin Freivogel
Abstract:
Date: 22/06/2011 - 10:30 am
Tech Note: Lav mic not working

Eternal inflation predicts that time will end
Speaker(s): Stefan Leichenauer
Abstract: Present treatments of eternal inflation regulate infinities by imposing a geometric cutoff. We point out that some matter systems reach the cutoff in finite time. This implies a nonzero probability for a novel type of catastrophe. According to the most successful measure proposals, our galaxy is lik... read more
Date: 22/06/2011 - 11:55 am
Tech Note: Lav mic not working

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