# 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.

## PSI 2015/2016 Condensed Matter - Oleg Tchernyshyov - Lecture 7

Tuesday Nov 17, 2015
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## PSI 2015/2016 Quantum Field Theory II - Francois David - Lecture 7

Tuesday Nov 17, 2015
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## AMATH 875/PHYS 786 - Fall 2015 - Lecture 22

Monday Nov 16, 2015
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## AMATH 875/PHYS 786 - Fall 2015 - Lecture 21

Monday Nov 16, 2015
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Course Description coming soon.

## PSI 2015/2016 Condensed Matter - Oleg Tchernyshyov - Lecture 6

Monday Nov 16, 2015
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## PSI 2015/2016 Quantum Field Theory II - Francois David - Lecture 6

Monday Nov 16, 2015
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## Conserved momenta of a ferromagnetic soliton

Friday Nov 13, 2015
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Solitons in a ferromagnet have interesting dynamics because atomic magnetic moments behave like little gyroscopes. A domain wall in a magnetic wire can be modeled as a bead on a string: it has two soft modes, position and orientation. This "bead" rotates when it is pushed and moves when twisted.

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## AMATH 875/PHYS 786 - Fall 2015 - Lecture 20

Friday Nov 13, 2015
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Course Description coming soon.

## The electroweak chiral Lagrangian with a light Higgs – systematics & application

Friday Nov 13, 2015
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I consider the Standard Model as an effective field theory (EFT) at the electroweak scale $v$. At the scale $f\geq v$ I assume a new, strong interaction that breaks the electroweak symmetry dynamically. The Higgs boson arises as a composite pseudo-Nambu-Goldstone boson in these scenarios and is therefore naturally light $(m_{h}\sim v)$. Based on these assumptions and the value of $\xi=v^{2}/f^{2}$, I explain the systematics that governs the effective expansion:\\

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## PSI 2015/2016 Condensed Matter - Oleg Tchernyshyov - Lecture 5

Friday Nov 13, 2015
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## Next Public Lecture

### GET A HALF-LIFE: ISOTOPES AS THE UNLIKELY HERO OF MODERN MEDICINE

Wednesday Dec 02, 2015

## RECENT PUBLIC LECTURE

### David Wineland: Keeping Better Time: The Era of Optical Atomic Clocks

Speaker: David Wineland