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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Bill Unruh


PIRSA:17080016  ( MP4 Medium Res , MP3 , PDF ) Which Format?
The exponential expansion of the universe from unrenormalised energy momentum tensor
Speaker(s): Bill Unruh
Abstract: The unrenormalised energy momentum tensor is both huge and fluctuating from point to point. Taking this seriously we (Qingdi Wang, Zhen Zhu, and myself) argue that the slow exponential expansion of the universe (on time scales of 10^10 years) comes from a very weak paramet... read more
Date: 03/08/2017 - 11:00 am

PIRSA:16060062  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Quantum Mechanics is Not Non-Local
Speaker(s): Bill Unruh
Abstract: Bell's inequality is often stated as proving that quantum mechanics is non-local (rather than non-realistic, which apparently shows that physicists have more problems with non-realism than with non-locality). I will argue that the purpose of the use of locality in Bell's argument (in the CHSH form) ... read more
Date: 23/06/2016 - 9:45 am

PIRSA:14090066  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Firewalls- A GR perspective
Speaker(s): Bill Unruh
Abstract: This talk will examine the Firewall argument and a number of possible approaches to it, with a variety of simple examples to try to clarify various aspects of the arguments.
Date: 04/09/2014 - 3:00 pm

PIRSA:13070049  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Measurement of Spectrum of Radiation from Horizon of Analog Black Hole
Speaker(s): Bill Unruh
Abstract:
Date: 23/07/2013 - 11:00 am
Collection: Loops 13

PIRSA:13050060  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Quantum Mechanics and Spacetime
Speaker(s): Bill Unruh
Abstract:
Date: 27/05/2013 - 11:05 am

PIRSA:11100114  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Emergence/analogy and Hawking Radiation
Speaker(s): Bill Unruh
Abstract: The concepts of emergence and analogy are very closely related -- A is like B vs A is B. I will discuss this in the context of the emergence of/analogy with Hwking radiation in the arena of fluid systems, and the possibility of doing experiments in the lab. Does this mean gravity is emergent from so... read more
Date: 27/10/2011 - 10:00 am

PIRSA:11080021  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Amplifier Noise, Black Holes and Dumb Holes
Speaker(s): Bill Unruh
Abstract: I will wander through the issues of fundamental quantum amplifier noise pointing out the very fundamental relation between that noise and the commutation relations of quantum mechanics. I will also present a simple model of a completely linear phase insensitive amplifier. I will then show the relati... read more
Date: 04/08/2011 - 2:30 pm

PIRSA:10090106  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI Special Lecture - Bill Unruh
Speaker(s): Bill Unruh
Abstract:
Date: 24/09/2010 - 1:30 pm

PIRSA:10090068  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Experimental detection of stimulated Hawking thermal radiation from analog white holes
Speaker(s): Bill Unruh
Abstract: TBA
Date: 15/09/2010 - 2:00 pm
Series: Colloquium

PIRSA:09100210  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Meet a Scientist - Prof. Bill Unruh
Speaker(s): Bill Unruh
Abstract: Quantum gravity, quantum processes in the early universe, evaporation of black holes, limits on the measurements made by real detectors (coupled to the environment), and with regards to mathematical problems, studying techniques rather than finding solutions.
Date: 02/04/2009 - 10:20 am
Collection: Meet a Scientist
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