# 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.

## The Holographic Universe

Tuesday Apr 20, 2010
Speaker(s):

We present a holographic description of four-dimensional single-scalar inflationary universes in terms of a three-dimensional quantum field theory. The holographic description correctly reproduces standard inflationary predictions in their regime of applicability. In the opposite case, wherein gravity is strongly coupled at early times, we propose a holographic description in terms of perturbative QFT and present models capable of satisfying the current observational constraints while exhibiting a phenomenology distinct from standard inflation.

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## WIMPless Dark Matter and Meson Decays with Missing Energy

Tuesday Apr 20, 2010
Speaker(s):

WIMPless dark matter offers an attractive framework in which dark matter can be very light. We investigate the implications of such scenarios on invisible decays of bottomonium states for dark matter with a mass less than around $5 {\rm GeV}$. We relate these decays to measurements of nucleon-dark matter elastic scattering. We also investigate the effect that a coupling to $s$ quarks has on flavor changing $b\to s$ processes involving missing energy.

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## Generation of Perturbations During Inflation

Tuesday Apr 20, 2010
Speaker(s):

Lecture 4

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## Quantum Spin Simulations (PHYS 7380) - Lecture 12

Tuesday Apr 20, 2010

## Explorations in Theoretical Astrophysics (PHYS 7890) - Lecture 12

Tuesday Apr 20, 2010
Speaker(s):

Gauge Invariant Cosmological Perturbation theory from 3+1 formulation of General Relativity. This course will aim to study in detail the 3+1 decomposition in General Relativity and use the formalism to derive Gauge invariant perturbation theory at the linear order. Some applications will be studied.

## Baryogenesis and Leptogenesis

Monday Apr 19, 2010
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## Quantum Spin Simulations - Lecture 11

Monday Apr 19, 2010

## Explorations in Theoretical Astrophysics (PHYS 7890) - Lecture 11

Monday Apr 19, 2010
Speaker(s):

Gauge Invariant Cosmological Perturbation theory from 3+1 formulation of General Relativity. This course will aim to study in detail the 3+1 decomposition in General Relativity and use the formalism to derive Gauge invariant perturbation theory at the linear order. Some applications will be studied.

## Quantum Spin Simulations (PHYS 7380) - Lecture 10

Friday Apr 16, 2010

## Explorations in Theoretical Astrophysics (PHYS 7890) - Lecture 10

Friday Apr 16, 2010
Speaker(s):

Gauge Invariant Cosmological Perturbation theory from 3+1 formulation of General Relativity. This course will aim to study in detail the 3+1 decomposition in General Relativity and use the formalism to derive Gauge invariant perturbation theory at the linear order. Some applications will be studied.

## Next Public Lecture

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

## RECENT PUBLIC LECTURE

### Mario Livio: Brilliant Blunders

Speaker: Mario Livio