# 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.

## 14/15 PSI - Yakir Aharonov

Tuesday Aug 19, 2014
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## Towards construction of a Wightman QFT in four dimensions

Tuesday Aug 19, 2014
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We prove that the $\lambda\phi^4_4$ quantum field theory on noncommutative Moyal space is, in the limit of infinite noncommutativity, exactly solvable in terms of the solution of a non-linear integral equation. The proof involves matrix model techniques which might be relevant for 2D quantum gravity and its generalisation to coloured tensor models of rank $\geq 3$. Surprisingly, our limit describes Schwinger functions of a Euclidean quantum field theory on standard $\mathbb{R}^4$ which satisfy the easy Osterwalder-Schrader axioms boundedness, covariance and symmetry.

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## 14/15 PSI - Quantum Mechanics 1

Tuesday Aug 19, 2014
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## 14/15 PSI - Special Functions 1

Tuesday Aug 19, 2014
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## 14/15 PSI - Classical Mechanics 4

Friday Aug 15, 2014
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## 14/15 PSI - Complex Analysis 4

Friday Aug 15, 2014
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## 14/15 PSI - Classical Mechanics 3

Thursday Aug 14, 2014
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## 14/15 PSI - Complex Analysis 3

Thursday Aug 14, 2014
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## CMB anomalies from primordial gravitational waves

Wednesday Aug 13, 2014
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We relate CMB anomalies and the recent observational evidence of primordial gravitational
waves. Two aspects are investigated:

(a) Several anomalies are spotted on the low ell temperature map of the WMAP and Planck
experiments. However, those anomalies disappear at high ell. We propose that those low ell
temperature anomalies may come from nearly scale invariant anomalies of the tensor sector.
Those anomalies on the temperature map naturally decay towards small scales, characterized

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## 14/15 PSI - Classical Mechanics 2

Wednesday Aug 13, 2014
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## RECENT PUBLIC LECTURE

### From the Mathematics of Supersymmetry to the Music of Arnold Schoenberg

Speaker: S. James Gates Jr.