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# 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.

## Why is the generalized second law true?

Tuesday Oct 12, 2010

The entropy outside of an event horizon can never decrease if one includes a term proportional to the horizon area. For a long time, this astonishing result had only been shown for quantum fields that are in an approximately steady state. I will describe a new proof of the generalized second law for arbitrary slices of semiclassical, rapidly-changing horizons. I will start with the simplest case, Rindler horizons, and then describe how the proof can be adapted to other cases (black holes, de Sitter, etc.) by restricting the field algebra to the horizon.

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## Statistical Mechanics (PHYS 602) - Lecture 6

Tuesday Oct 12, 2010
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## Quantum Field Theory I (PHYS 601) - Lecture 6

Tuesday Oct 12, 2010
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## Statistical Mechanics (PHYS 602) - Lecture 5

Friday Oct 08, 2010
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## Quantum Field Theory I (PHYS 601) - Lecture 5

Friday Oct 08, 2010
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## Gravitational collapse and far from equilibrium dynamics in holographic CFTs

Thursday Oct 07, 2010

A remarkable result from heavy ion collisions at the Relativistic Heavy Ion Collider is that shortly after a collision, the medium produced behaves as a nearly ideal liquid. The system is very dynamic and evolves from a state of two colliding nuclei to a liquid in a time roughly equivalent to the time it takes light to cross a proton. Understanding the mechanisms behind the rapid approach to a liquid state is a challenging task.

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## Statistical Mechanics (PHYS 602) - Lecture 4

Thursday Oct 07, 2010
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## Quantum Field Theory I (PHYS 601) - Lecture 4

Thursday Oct 07, 2010
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## Why did Isaac Newton Believe in Alchemy?

Wednesday Oct 06, 2010
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Isaac Newton is known today as one of the most profound scientists to have ever lived. Newton's discoveries in physics, optics, and mathematics overturned a variety of fundamental beliefs about nature and reshaped science in ways that are still powerfully with us. But this is only part of Newton's fascinating story. Research over the last generation has revealed that the famous scientist spent over thirty years composing, transcribing, and expounding alchemical texts, resulting in a mass of papers totaling about a million manuscript words.

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## Proposal for Divergence-Free Quantization of Covariant Scalar Fields

Wednesday Oct 06, 2010
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Guided by idealized but soluble nonrenormalizable models, a nontraditional proposal for the quantization of covariant scalar field theories is advanced, which achieves a term-by-term, divergence-free perturbation analysis of interacting models expanded about a suitable pseudofree theory [differing from a free theory by an $O(\hbar^2)$ term].

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