# Video Library

Since 2002 Perimeter Institute has been recording seminars, conference talks, public outreach events such as talks from top scientists 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 and 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.

Accessibly by anyone with internet, Perimeter aims to share the power and wonder of science with this free library.

## 13/14 PSI - Condensed Matter - Lecture 7

Tuesday Nov 19, 2013
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## 13/14 PSI - Quantum Field Theory II - Lecture 7

Tuesday Nov 19, 2013
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## 13/14 PSI - Condensed Matter - Lecture 6

Monday Nov 18, 2013
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## 13/14 PSI - Quantum Field Theory II - Lecture 6

Monday Nov 18, 2013
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## Topological States in Strongly-Correlated Materials

Friday Nov 15, 2013
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In the study of strongly-correlated insulators, a long-standing puzzle remained open for over 40 years. Some Kondo insulators (or mixed-valent insulators) display strange electrical transport that cannot be understood if one assumes that it is governed by the three-dimensional bulk. In this talk, I show that some 3D Kondo insulators have the right ingredients to be topological insulators, which we called “topological Kondo insulators”.

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## N-body lensed CMB maps: lensing extraction and characterization

Friday Nov 15, 2013
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After multiple high precision detections (ACT, SPT, Planck) gravitational lensing has become a new source of relevant cosmological information: combining it with other probes (e.g. the large scale structure) can give significant insight on the evolution of the Dark Energy component. Developing new algorithms of estimate of this signal will allow the community to exploit this observable as a new and independent probe in cosmology.

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## 13/14 PSI - Condensed Matter - Lecture 5

Friday Nov 15, 2013
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## 13/14 PSI - Quantum Field Theory II - Lecture 5

Friday Nov 15, 2013
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## Finite regions, spherical entanglement, and quantum gravity

Thursday Nov 14, 2013
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An exciting frontier in physics is to understand the quantum nature of gravitation in finite regions of spacetime. Study of these regions from below'', that is, by studying the quantum geometry of finite regions emerging from loop gravity and spin networks has recently resulted in a new road to the quantization of volume and to evidence that there is a robust gap in the volume spectrum. In this talk I will complement these results with recent work on conformal field theories in a particular finite region, a spherical ball of space.

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## Self-force and Green function in Schwarzschild spacetime via quasinormal modes and branch cut

Thursday Nov 14, 2013
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The modelling of gravitational wave sources is of timely interest given the exciting prospect of a first detection of gravitational waves by the new generation of detectors. The motion of a small compact object around a massive black hole deviates from a geodesic due to the action of its own field, giving rise to a self-force and the emission of gravitational waves. The self-force program has recently achieved important results using well-established methods.

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## Lectures On-Demand

Watch on Perimeter's