# 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.

## Foundations and Interpretation of Quantum Theory - Lecture 20

Tuesday Mar 30, 2010
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Macroscopic quantum coherence

## Explorations in Numerical Relativity (PHYS 642) - Lecture 12

Tuesday Mar 30, 2010
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## The Next-to-Simplest Quantum Field Theories

Tuesday Mar 30, 2010
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We apply newly-developed techniques for studying perturbative scattering amplitudes to gauge theories with matter. It is well known that the N=4 SYM theory has a very simple S-matrix; do other gauge theories see similar simplifications in their S-matrices? It turns out the one-loop gluon S-matrix simplifies if the matter representations satisfy some group theoretic constraints. In particular, these constraints can be expressed as linear Diophantine equations involving the higher order Indices (or higher-order Casimirs) of these representations.

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## Explorations in Particle Theory (PHYS 646) - Lecture 13

Tuesday Mar 30, 2010
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## Explorations in Cosmology (PHYS 649) - Lecture 12

Tuesday Mar 30, 2010
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## The compositional structure of multipartite quantum entanglement

Monday Mar 29, 2010
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Multipartite quantum states constitute a (if not the) key resource for quantum computations and protocols. However obtaining a generic, structural understanding of entanglement in N-qubit systems is still largely an open problem. Here we show that multipartite quantum entanglement admits a compositional structure. The two SLOCC-classes of genuinely entangled 3-qubit states, the GHZ-class and the W-class, exactly correspond with the two kinds of commutative Frobenius algebras on C^2, namely special' ones and anti-special' ones.

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## Explorations in Numerical Relativity - Lecture 11

Monday Mar 29, 2010
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## Beyond the Standard Model Physics and the LHC (Lecture 1)

Monday Mar 29, 2010
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These three lectures cover several ideas of physics beyond the Standard Model. My focus is on ideas that give a natural stabilization solution to the electroweak scale, which is mysteriously light compared to the gravitational Planck scale. These ideas include supersymmetric field theories, extra dimensions, and Higgs boson physics. I shall describe what I think are the "best bets" among these approaches, and more importantly the ways they can be discerned by experiment.

## Explorations in Particle Theory (PHYS 646) - Lecture 12

Monday Mar 29, 2010
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## Explorations in Cosmology (PHYS 649) - Lecture 11

Monday Mar 29, 2010
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## Next Public Lecture

### BLACK HOLE BLUES AND OTHER SONGS FROM OUTER SPACE

Wednesday May 03, 2017

## RECENT PUBLIC LECTURE

### Amber Straughn: A New Era in Astronomy: NASA’s James Webb Space Telescope

Speaker: Amber Straughn