# 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.

## Conformal Field Theory (PHYS 609) - Lecture 5

Friday Nov 26, 2010
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## Mathematical Physics (PHYS 624) - Lecture 4

Thursday Nov 25, 2010
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## Conformal Field Theory (PHYS 609) - Lecture 4

Thursday Nov 25, 2010
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## From low-distortion embeddings to information locking

Wednesday Nov 24, 2010
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I'll describe a connection between uncertainty relations, information locking and low-distortion embeddings of L2 into L1. Exploiting this connection leads to the first explicit construction of entropic uncertainty relations for a number of measurements that is polylogarithmic in the dimension d while achieving an average measurement entropy of (1-e) log d for arbitrarily small e. From there, it is straightforward to obtain the first strong information locking scheme that is efficiently computable using a quantum computer.

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## Making sense of non-Hermitian Hamiltonians

Wednesday Nov 24, 2010
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The average quantum physicist on the street believes that a quantum-mechanical Hamiltonian must be Dirac Hermitian (invariant under combined matrix transposition and complex conjugation) in order to guarantee that the energy eigenvalues are real and that time evolution is unitary. However, the Hamiltonian $H=p^2+ix^3$, which is obviously not Dirac Hermitian, has a real positive discrete spectrum and generates unitary time evolution, and thus it defines a fully consistent and physical quantum theory.

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## Conformal Field Theory (PHYS 609) - Lecture 3

Wednesday Nov 24, 2010
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## Mathematical Physics (PHYS 624) - Lecture 3

Wednesday Nov 24, 2010
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## Small thermal machines

Tuesday Nov 23, 2010
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The second law of thermodynamics tells that physics imposes a fundamental constraint on the efficiency of all thermal machines.

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## Fermions, holography, and consistent truncations

Tuesday Nov 23, 2010
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We discuss the coupling of fermions to holographic superconductors in 3+1 and 4+1 (bulk) dimensions. We do so from a top-down perspective, by considering the reduction of the fermionic sector in recently found consistent truncations of type IIB and D=11 supergravity on squashed Sasaki-Einstein manifolds, which notably retain a finite number of charged (massive) modes. The truncations in question also include the string/M-theory embeddings of various models which have been proposed to describe systems with non-relativistic scale invariance via holography.

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## Conformal Field Theory (PHYS 609) - Lecture 2

Tuesday Nov 23, 2010
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## Next Public Lecture

### BLACK HOLE BLUES AND OTHER SONGS FROM OUTER SPACE

Wednesday May 03, 2017

## RECENT PUBLIC LECTURE

### Amber Straughn: A New Era in Astronomy: NASA’s James Webb Space Telescope

Speaker: Amber Straughn