# 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.

## Mini-Course on Mach's Principle - Lecture 4

Wednesday Mar 04, 2009
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## Entanglement and measurement in general probabilistic theories

Tuesday Mar 03, 2009
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Quantum mechanics is a non-classical probability theory, but hardly the most general one imaginable: any compact convex set can serve as the state space for an abstract probabilistic model (classical models corresponding to simplices). From this altitude, one sees that many phenomena commonly regarded as characteristically quantum' are in fact generically non-classical'. In this talk, I'll show that almost any non-classical probabilistic theory shares with quantum mechanics a notion of entanglement and, with this, a version of the so-called measurement problem.

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## Codimension-2 brane inflation

Tuesday Mar 03, 2009
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We consider a probe codimension-2 brane inflation scenario in a warped six-dimensional flux compactification. First, we stabilise the modulus of the model by means of a cap regularisation of the codimension-2 singularities of the background solution. Then, we discuss the cosmological evolution of the world-volume of a probe codimension-2 brane when it moves along the radial direction of the internal space.

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## Eternal Inflation, Bubble Collisions, and the Disintegration of the Persistence of Memory

Tuesday Mar 03, 2009
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I will compute the probability distribution for bubble collisions in an inflating false vacuum which decays by bubble nucleation. The number of collisions in our backward lightcone can be large in realistic models without tuning. In addition, we calculate the angular position and size distribution of the collisions on the cosmic microwave background sky.

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## Integrability and planar AdS/CFT - Lecture 3

Tuesday Mar 03, 2009
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Lecture 3 - The physics of Luscher corrections - Quantum Thermodynamic Bethe Ansatz and Classical Hirota Dynamics - The exact spectrum of planar AdS/CFT

Monday Mar 02, 2009
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Lecture on Quantum Groups by Lucy Zhang

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## Integrability and planar AdS/CFT - Lecture 2

Monday Mar 02, 2009
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Lecture 2 - The spin-chain/string world-sheet S-matrix - The all-loop asymptotic Bethe ansatz - Some examples

## Integrability and planar AdS/CFT - Lecture 1

Friday Feb 27, 2009
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Lecture 1 - The one loop dilatation operator of N=4 SYM - Integrable models, Bethe ansatz - One-loop Bethe ansatz for N=4 SYM, coordinate and algebraic approach

## The Road to First Physics with ATLAS at the LHC

Friday Feb 27, 2009
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The ATLAS experiment at the Large Hadron Collider (LHC) at CERN is completing final preparations for first high energy collisions in 2009. This talk will cover: the physics motivation of the LHC, highlights of the ATLAS experiment, commissioning, and prospects for new physics discoveries ahead.

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## Introduction to the Bosonic String Part B

Friday Feb 27, 2009
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This course provides a thorough introduction to the bosonic string based on the Polyakov path integral and conformal field theory. We introduce central ideas of string theory, the tools of conformal field theory, the Polyakov path integral, and the covariant quantization of the string. We discuss string interactions and cover the tree-level and one loop amplitudes. More advanced topics such as T-duality and D-branes will be taught as part of the course. The course is geared for M.Sc. and Ph.D. students enrolled in Collaborative Ph.D. Program in Theoretical Physics.

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## 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