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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C06011 - Natural Ultraviolet Cutoffs In Expanding Space-Times 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

PIRSA:06090020  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Mode creation in expanding universes, through dissipative effects
Speaker(s): Renaud Parentani - Universite de Paris-Sud
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Date: 05/09/2006 - 9:00 am
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090020/
PIRSA:06090021  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
QFT on a growing lattice
Speaker(s): Brendan Foster - Utrecht
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Date: 05/09/2006 - 11:00 am
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090021/
PIRSA:06090022  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
A discrete, Lorentz-invariant wave equation and its continuum limit
Speaker(s): Rafael Sorkin - Syracuse University
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Date: 05/09/2006 - 2:00 pm
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090022/
PIRSA:06090023  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Insights from background independent approaches to quantum gravity
Speaker(s): Lee Smolin
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Date: 05/09/2006 - 4:00 pm
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090023/
PIRSA:06090024  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Black hole evaporation and information
Speaker(s): Lee Smolin
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Date: 05/09/2006 - 6:00 pm
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090024/
PIRSA:06090025  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Questions about high - k phsyics in expanding spacetimes
Speaker(s): Jens Niemeyer - Lehrstuhl für Astronomie Universitat Wurzburg
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Date: 06/09/2006 - 9:00 am
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090025/
PIRSA:06090026  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Inflationary cosmological pertubations of quantum - mechanical origin
Speaker(s): Jerome Martin - Institut d'Astrophysique de Paris
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Date: 06/09/2006 - 11:00 am
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090026/
PIRSA:06090001  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Thermodynamics of spacetime
Speaker(s): Ted Jacobson - University of Maryland
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
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URL: http://pirsa.org/06090001/
PIRSA:06090027  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Initial conditions in the presence of a UV cutoff: modified mode equations in inflation
Speaker(s): Larissa Lorenz - Institut d'Astrophysique de Paris
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Date: 06/09/2006 - 4:00 pm
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090027/
PIRSA:06090028  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Towards a generally covariant cutoff using sampling theory
Speaker(s): R Martin
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Date: 06/09/2006 - 4:30 pm
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090028/
PIRSA:06090029  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Thoughts on vacuum growth
Speaker(s): Ted Jacobson - University of Maryland
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Date: 06/09/2006 - 5:00 pm
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090029/
PIRSA:06090033  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Effective actions for gravity
Speaker(s): Koenraad Schalm - University of Amsterdam
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Date: 07/09/2006 - 9:00 am
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090033/
PIRSA:06090030  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
QFT with minimum length
Speaker(s): Sabine Hossenfelder
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Date: 08/09/2006 - 9:00 am
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090030/
PIRSA:06090031  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Generalized Uncertainty Principle
Speaker(s): Ulrich Harbach - Institut für Theoretische Physik Johann Wolfgang Goethe Universitat Frankfurt am Main
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Date: 08/09/2006 - 11:00 am
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090031/
PIRSA:06090032  ( Flash Presentation, Windows Presentation, Windows Video File , MP3  , PDF) Which Format?
Inflationary cosmological pertubations of quantum mechanical origin
Speaker(s): Jerome Martin - Institut d'Astrophysique de Paris
Abstract:
Date: 08/09/2006 - 12:00 pm
Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times
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URL: http://pirsa.org/06090032/
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