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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Ted Jacobson


PIRSA:19050036  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Gravitational thermodynamics of causal diamonds
Speaker(s): Ted Jacobson
Abstract: Black hole (more generally, horizon) thermodynamics is a window into quantum gravity. Can horizon thermodynamics---and ultimately quantum gravity---be quasi-localized? A special case is the static patch of de Sitter spacetime, known since the work of Gibbons and Hawking to admit a thermodynamic equi... read more
Date: 21/05/2019 - 2:30 pm

PIRSA:17080014  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Blandford-Znajek process without plasma
Speaker(s): Ted Jacobson
Abstract: In 1977, Blandford and Znajek  discovered a process by which a spinning  black hole can transfer rotational energy to a force-free plasma, offering a possible mechanism for energy and jet emissions from quasars and other astrophysical sources.  This Blandford-Znajek (BZ... read more
Date: 01/08/2017 - 11:00 am

PIRSA:15080072  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Einstein's equation from maximal entropy of vacuum entanglement
Speaker(s): Ted Jacobson
Abstract: If entanglement entropy in a small geodesic ball is maximized at fixed volume in the vacuum, then it should be stationary under variation to a nearby state. I will show that this stationarity condition is equivalent to the semiclassical Einstein equation. If the matter QFT is not conformal, then the... read more
Date: 19/08/2015 - 2:00 pm

PIRSA:15080035  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Fun with ideal plasmas
Speaker(s): Ted Jacobson
Abstract: I will sketch a few interesting phenomena involving ideal plasmas, including helicity conservation, frozen flux, the Blandford-Znajek mechanism, and self-confined Poynting jets, using the language of differential forms.
Date: 14/08/2015 - 2:00 pm

PIRSA:14050134  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Vacuogenesis in Discrete Cosomology
Speaker(s): Ted Jacobson
Abstract:
Date: 22/05/2014 - 5:40 pm

PIRSA:14030103  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Spacetime approach to force-free magnetospheres - Lecture 8
Speaker(s): Ted Jacobson
Abstract:
Date: 05/03/2014 - 10:30 am

PIRSA:14030102  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Spacetime approach to force-free magnetospheres - Lecture 7
Speaker(s): Ted Jacobson
Abstract:
Date: 05/03/2014 - 9:30 am

PIRSA:14030098  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Spacetime approach to force-free magnetospheres - Lecture 6
Speaker(s): Ted Jacobson
Abstract:
Date: 04/03/2014 - 2:30 pm

PIRSA:14030097  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Spacetime approach to force-free magnetospheres - Lecture 5
Speaker(s): Ted Jacobson
Abstract:
Date: 04/03/2014 - 1:00 pm

PIRSA:14020158  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Spacetime approach to force-free magnetospheres - Lecture 4
Speaker(s): Ted Jacobson
Abstract:
Date: 26/02/2014 - 10:45 am

PIRSA:14020157  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Spacetime approach to force-free magnetospheres - Lecture 3
Speaker(s): Ted Jacobson
Abstract:
Date: 26/02/2014 - 9:30 am

PIRSA:14020155  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Spacetime approach to force-free magnetospheres - Lecture 2
Speaker(s): Ted Jacobson
Abstract:
Date: 25/02/2014 - 2:30 pm

PIRSA:14020154  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Spacetime approach to force-free magnetospheres - Lecture 1
Speaker(s): Ted Jacobson
Abstract:
Date: 25/02/2014 - 1:00 pm

PIRSA:14020136  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Firewall evasion by quantum gravity
Speaker(s): Ted Jacobson
Abstract: It has been argued that if black hole evaporation is a unitary quantum process, then a black hole horizon must be cloaked by a "firewall", i.e. a highly excited state of local quantum fields. This reasoning is based on factorizing the Hilbert space into interior and exterior degrees of freedom. Such... read more
Date: 13/02/2014 - 2:30 pm

PIRSA:13010021  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
The black hole information paradox and its resolution
Speaker(s): Ted Jacobson
Abstract: Both AdS/CFT duality and more general reasoning from quantum gravity point to a rich collection of boundary observables that always evolve unitarily. The physical quantum gravity states described by these observables must be solutions of the spatial diffeomorphism and Wheeler-deWitt constraints, whi... read more
Date: 17/01/2013 - 2:30 pm

PIRSA:11100056  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Can Lorentz Symmetry be Emergent?
Speaker(s): Ted Jacobson
Abstract: I will begin by discussing some of the strongest observational evidence for Lorentz symmetry, and the essential role that Lorentz symmetry appears to play in the consistency of black hole thermodynamics. Next I will discuss some reasons for suspecting that Lorentz symmetry may nevertheless be emerge... read more
Date: 27/10/2011 - 3:30 pm

PIRSA:09110066  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Workshop Summary and Discussion
Speaker(s): Ted Jacobson
Abstract:
Date: 10/11/2009 - 3:00 pm

PIRSA:06090029  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Thoughts on vacuum growth
Speaker(s): Ted Jacobson
Abstract:
Date: 06/09/2006 - 5:00 pm

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:05010008  ( MP4 Medium Res , MP3 , PDF ) Which Format?
TBA - Jan. 19/2005
Speaker(s): Ted Jacobson
Abstract:
Date: 19/01/2005 - 11:00 am
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