PIRSA:C06011 - Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 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 Abstract: Date: 05/09/2006 - 9:00 am Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 URL: http://pirsa.org/06090020/  Share:

PIRSA:06090021  ( Flash Presentation , Windows Presentation , Windows Video File , MP3 , PDF) Which Format? QFT on a growing lattice Speaker(s): Brendan Foster Abstract: Date: 05/09/2006 - 11:00 am Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 URL: http://pirsa.org/06090021/  Share:

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 Abstract: Date: 05/09/2006 - 2:00 pm Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 URL: http://pirsa.org/06090022/  Share:

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 Abstract: Date: 05/09/2006 - 4:00 pm Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 URL: http://pirsa.org/06090023/  Share:

PIRSA:06090024  ( Flash Presentation , Windows Presentation , Windows Video File , MP3 , PDF) Which Format? Black hole evaporation and information Speaker(s): Lee Smolin Abstract: Date: 05/09/2006 - 6:00 pm Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 URL: http://pirsa.org/06090024/  Share:

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 Abstract: Date: 06/09/2006 - 9:00 am Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 URL: http://pirsa.org/06090025/  Share:

PIRSA:06090026  ( Flash Presentation , Windows Presentation , Windows Video File , MP3 , PDF) Which Format? Inflationary cosmological pertubations of quantum - mechanical origin Speaker(s): Jerome Martin Abstract: Date: 06/09/2006 - 11:00 am Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 URL: http://pirsa.org/06090026/  Share:

PIRSA:06090001  ( Flash Presentation , Windows Presentation , Windows Video File , 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 URL: http://pirsa.org/06090001/  Share:

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 Abstract: Date: 06/09/2006 - 4:00 pm Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 URL: http://pirsa.org/06090027/  Share:

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 Abstract: Date: 06/09/2006 - 4:30 pm Collection: Natural Ultraviolet Cutoffs In Expanding Space-Times - 2006 URL: http://pirsa.org/06090028/  Share: