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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.

## A Systematic Approach to Rapidity Divergences

Thursday Dec 08, 2011
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I will discuss how to construct a consistent effective field theory when the differing modes of the theory have the same invariant mass scale. I will sketch some phenomenological applications of the formalism relevant for the LHC.

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## Mathematical Physics - Lecture 14

Thursday Dec 08, 2011
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## Canonical Time Evolution in Simplicial Gravity

Wednesday Dec 07, 2011
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## More Rounds of Measurement Increase the Abilities to Locally Transform Quantum States

Wednesday Dec 07, 2011
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## Fundamental Limitations for Quantum and Nano Thermodynamics

Wednesday Dec 07, 2011
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## Superconformally Covariant OPE and General Gauge Mediation

Wednesday Dec 07, 2011
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After a short introduction to general gauge mediation, we use the operator product expansion (OPE) to explore the dynamics of the hidden sector of SUSY breaking, much like the OPE is used in e+e- scattering to hadrons in QCD. Along the way we derive consequences that the N=1 superconformal symmetry puts on three-point functions of two current superfields with an arbitrary superconformal primary operator. Using those constraints we construct a supermultiplet'' of OPEs.

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## Flavored Dark Matter: Direct Detection and Collider Signals

Wednesday Dec 07, 2011
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I will present a class of models in which the dark matter particle carries flavor quantum numbers, and has renormalizable contact interactions with Standard Model fields. In particular, I will focus on models where the dark matter flavor is identified with lepton flavor in the Standard Model. The region of parameter space where the dark matter has the right abundance to be a thermal relic is accessible at current direct detection experiments.

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## Mathematical Physics - Lecture 13

Wednesday Dec 07, 2011
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## Constraining Conformal Field Theories with a Higher Spin Symmetry

Tuesday Dec 06, 2011
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We study the constraints imposed by the existence of a single higher spin conserved current on a three dimensional conformal field theory. A single higher spin conserved current implies the existence of an infinite number of higher spin conserved currents. The correlation functions of the stress tensor and the conserved currents are then shown to be equal to those of a free field theory. Namely a theory of $N$ free bosons or free fermions. This is an extension of the Coleman-Mandula theorem to CFT's, which do not have a conventional S matrix.

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## Search for New Non-standard Decay Modes of SM-like Higgs at the LHC

Tuesday Dec 06, 2011
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We present strategies of searching for supersymmetric non-standard decays of Standard Model (SM)-like Higgs bosons (h2) at the Large Hadron Collider (LHC), motivated by ''Dark Light Higgs'' (DLH) scenario. The DLH sccenario represents a limit of the nearly-Peccei-Quinn-symmetric Next-to-Minimal Supersymmetric Standard Model, where there naturally co-exist two light singlet-like particles: a scalar (h1), a pseudoscalar (a1), and a light singlino-like DM candidate (\chi_1), all with masses of order 10 GeV or below.

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## Next Public Lecture

### PAULINE GAGNON: IMPROBABLE FEATS AND USELESS DISCOVERIES

Wednesday Nov 08, 2017

## RECENT PUBLIC LECTURE

### Erik Verlinde: A new view on gravity and the dark side of the cosmos

Speaker: Erik Verlinde