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# Video Library

Since 2002 Perimeter Institute has been recording seminars, conference talks, and public outreach events using video cameras installed in our lecture theatres.  Perimeter now has 7 formal presentation spaces for its many scientific conferences, seminars, workshops and educational outreach activities, all with advanced audio-visual technical capabilities.  Recordings of events in these areas are all available On-Demand from this Video Library and on Perimeter Institute Recorded Seminar Archive (PIRSA)PIRSA is a permanent, free, searchable, and citable archive of recorded seminars from relevant bodies in physics. This resource has been partially modelled after Cornell University's arXiv.org.

## A Natural Language for AdS/CFT Correlators

Wednesday Sep 14, 2011
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## Relativity - Lecture 3

Wednesday Sep 14, 2011
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## Quantum Theory - Lecture 2

Tuesday Sep 13, 2011
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## Relativity - Lecture 2

Tuesday Sep 13, 2011
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## Quantum Theory - Lecture 1

Monday Sep 12, 2011
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## Relativity - Lecture 1

Monday Sep 12, 2011
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## Integral Transforms and Green's Functions - Lecture 4

Friday Sep 09, 2011
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## Special Functions and Distributions - Lecture 4

Friday Sep 09, 2011
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## Cosmology Meets Quantum Gravity: a Chiral Signature in the CMB?

Thursday Sep 08, 2011
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Cosmology and quantum gravity have not always had the smoothest of interactions. As a case in point I'll summarize the calculation behind the prediction of tensor modes in inflationary universes and discuss the difficulties found in recasting this calculation in terms of Ashtekar-Barbero-Immirzi variables. Contrary to the belief that inflation is shielded from quantum gravity'', novelties are found, leading to the interesting prediction of a chiral signature in the gravitational wave background, proportional to the imaginary part of the Immirzi parameter.

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## Integral Transforms and Green's Functions - Lecture 3

Thursday Sep 08, 2011
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## Next Public Lecture

Check back for details on the next lecture in Perimeter's Public Lectures Series