# 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.

## Explorations in Particle Theory-1

Monday Apr 06, 2015
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## Modified Gravity, Dark Matter and Black Hole Shadows

Thursday Apr 02, 2015
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A modified gravity (MOG) theory has been developed over the past decade that can potentially fit all the available data in cosmology and the present universe. The basic ingredients of the theory are described by an action principle determined by the Einstein-Hilbert metric tensor and curvature tensor. An additional massive vector field φµ is sourced by a gravitational charge $Q=\sqrt{\alpha G_N}M$, where $\alpha$ is a parameter, $G_N$ is Newton's gravitational constant and $M$ is the mass of a body.

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## Explorations in Condensed Matter-14

Thursday Apr 02, 2015
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## Explorations in Quantum Information-14

Thursday Apr 02, 2015
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## The Most Wanted Particle

Wednesday Apr 01, 2015
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Jon Butterworth, University College London
The Most Wanted Particle
Perimeter Institute Public Lecture
WEDNESDAY, April 1 at 7:00 pm
Mike Lazaridis Theatre of Ideas
Perimeter Institute
31 Caroline St. N., Waterloo

Tickets available online on Monday, March 16 at 9:00 am.

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## Hydrodynamic simulations of rotating and non-rotating black holes

Wednesday Apr 01, 2015
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There is an analogy between the propagation of fields in the vicinity of astrophysical black holes and the that of small excitations in fluids and superfluids. This analogy allows one to test, challenge and verify, in tabletop experiments, the elusive processes of black hole mass and angular momentum loss.

I will first present a brief overview on analogue black hole experiments, and then discuss in more detail some of my earlier and more recent experimental and theoretical results on the subject.

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## The Higgs as a portal to New Physics

Wednesday Apr 01, 2015
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The discovery of the Higgs boson at the Large Hadron Collider marks the culmination of a decades-long hunt for the last ingredient of the Standard Model. At the same time, this discovery has started a new era in the search for more fundamental physics. In this talk, I will discuss what we have learned from the Higgs discovery about the mechanism of electroweak symmetry breaking and the implications for the existence of additional Higgs bosons. I will then highlight the future prospects of the Higgs boson in shedding light on New Physics and in particular on the nature of Dark Matter.

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## Explorations in Condensed Matter-13

Wednesday Apr 01, 2015
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## Explorations in Quantum Information-13

Wednesday Apr 01, 2015
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## 4-point functions, 3D gravity and the 2D analytic bootstrap

Tuesday Mar 31, 2015
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We will discuss techniques for computing 4-point functions of local operators in 2D conformal field theories, and their implications for semiclassical 3D quantum gravity. For generic 4-point functions, we present new closed-form expansions of the Virasoro conformal blocks. Specializing to correlators of holomorphic operators, these can be efficiently and exactly determined using an analytic implementation of the conformal bootstrap.

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## Next Public Lecture

### Amanda Peet, University of Toronto and Perimeter Institute

Wednesday May 06, 2015

## RECENT PUBLIC LECTURE

### The Most Wanted Particle

Speaker: Jon Butterworth