# 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.

## Topological line operators and renormalization group flows in two dimensions

Tuesday Mar 06, 2018
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Topological defect operators are extended operators in a quantum field theory (QFT) whose correlation functions are independent of continuous changes of the ambient space. They satisfy nontrivial fusion relations and put nontrivial constraints on the QFT itself and its deformations (such as renormalization group (RG) flows). Canonical examples of topological defect operators include generators of (higher-form) global symmetries whose constraints on the QFT have been well-studied.

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## Mapping the Universe with Euclid

Tuesday Mar 06, 2018
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In 2020 the European Space Agency (ESA) will launch the Euclid satellite mission. Euclid is an ESA medium class astronomy and astrophysics space mission, and will undertake a galaxy redshift survey over the redshift range 0.9 < z < 1.8, while simultaneously performing an imaging survey in both visible and near infrared bands. The complete survey will provide hundreds of thousands images and several tens of Petabytes of data.

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## PSI 2017/2018 - Quantum Information - Lecture 11

Tuesday Mar 06, 2018
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## PSI 2017/2018 - String Theory - Lecture 11

Tuesday Mar 06, 2018
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## Decomposable Specht modules

Monday Mar 05, 2018
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I will give a brief survey of the study of decomposable Specht modules for the symmetric group and its Hecke algebra, which includes results of Murphy, Dodge and Fayers, and myself. I will then report on an ongoing project with Louise Sutton, in which we are studying decomposable Specht modules for the Hecke algebra of type $B$ indexed by `bihooks’.

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## PSI 2017/2018 - Quantum Information - Lecture 10

Monday Mar 05, 2018
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## PSI 2017/2018 - String Theory - Lecture 10

Monday Mar 05, 2018
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## Quantum Field Theory for Cosmology (AMATH872/PHYS785) - Lecture 15

Friday Mar 02, 2018
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## PSI 2017/2018 - Beyond Standard Model - Lecture 5

Friday Mar 02, 2018
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## PSI 2017/2018 - Quantum Information - Lecture 9

Friday Mar 02, 2018
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## Next Public Lecture

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

## RECENT PUBLIC LECTURE

### Emily Levesque: The Weirdest Stars in the Universe

Speaker: Emily Levesque