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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C06011 - Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006PODCAST Subscribe to podcast

The question of how to describe a natural ultraviolet cutoff in an expanding space-time is of significance in several respects. First, it concerns the fate of general covariance in the presence of a natural UV cutoff. Second, it concerns the continued generating of degrees of freedom through expansion, which carries with it the possibility of an associated generating of vacuum energy. Finally, through inflation, a natural ultraviolet cutoff may have left observable imprints in the CMB.

Organizer(s): Justin Khoury  

Collection URL: http://pirsa.org/C06011


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PIRSA:06090020  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Mode creation in expanding universes, through dissipative effects
Speaker(s): Renaud Parentani
Abstract:
Date: 05/09/2006 - 9:00 am

PIRSA:06090021  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Do background independent approaches to quantum gravity have something to say about this question?
Speaker(s): Brendan Foster
Abstract: The question of how to describe a natural ultraviolet cutoff in an expanding space-time is of significance in several respects. First, it concerns the fate of general covariance in the presence of a natural UV cutoff. Second, it concerns the continued generating of degrees of freedom through expansi... read more
Date: 05/09/2006 - 11:00 am

PIRSA:06090022  ( MP4 Medium Res , MP3 , PDF ) Which Format?
A discrete, Lorentz-invariant wave equation and its continuum limit
Speaker(s): Rafael Sorkin
Abstract:
Date: 05/09/2006 - 2:00 pm

PIRSA:06090023  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Insights from background independent approaches to quantum gravity
Speaker(s): Lee Smolin
Abstract:
Date: 05/09/2006 - 4:00 pm

PIRSA:06090024  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Black hole evaporation and information
Speaker(s): Lee Smolin
Abstract:
Date: 05/09/2006 - 6:00 pm

PIRSA:06090025  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Questions about high - k phsyics in expanding spacetimes
Speaker(s): Jens Niemeyer
Abstract:
Date: 06/09/2006 - 9:00 am

PIRSA:06090026  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Inflationary cosmological pertubations of quantum - mechanical origin
Speaker(s): Jerome Martin
Abstract:
Date: 06/09/2006 - 11:00 am

PIRSA:06090001  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Thermodynamics of spacetime
Speaker(s): Ted Jacobson
Abstract: I will first argue that the notion of black hole entropy extends universally to causal horizons. Then I will deduce the causal dynamics of spacetime from the equilibrium thermodynamics of causal horizons. Specifically, it will be shown how the Clausius relation dS = dQ/T between entropy change, ener... read more
Date: 06/09/2006 - 2:00 pm
Series: Colloquium

PIRSA:06090027  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Initial conditions in the presence of a UV cutoff: modified mode equations in inflation
Speaker(s): Larissa Lorenz
Abstract:
Date: 06/09/2006 - 4:00 pm

PIRSA:06090028  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Towards a generally covariant cutoff using sampling theory
Speaker(s): R Martin
Abstract:
Date: 06/09/2006 - 4:30 pm

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