Video Library

Since 2002 Perimeter Institute has been recording seminars, conference talks, public outreach events such as talks from top scientists 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 and 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. 

Accessibly by anyone with internet, Perimeter aims to share the power and wonder of science with this free library.

 

  

 

Friday Feb 21, 2020
Speaker(s): 
Collection/Series: 
Scientific Areas: 

 

Thursday Feb 20, 2020
Speaker(s): 

From a probabilistic perspective, 2D quantum gravity is the study of natural probability measures on the space of all possible geometries on a topological surface. One natural approach is to take scaling limits of discrete random surfaces. Another approach, known as Liouville quantum gravity (LQG), is via a direct description of the random metric under its conformal coordinate. In this talk, we review both approaches, featuring a joint work with N. Holden proving that uniformly sampled triangulations converge to the so called pure LQG under a certain discrete conformal embedding.

Collection/Series: 
Scientific Areas: 

 

Thursday Feb 20, 2020
Speaker(s): 
Scientific Areas: 

 

Thursday Feb 20, 2020
Speaker(s): 

I will review the relation between the A twist of 3d N=4 gauge theories and

the conformal blocks/chiral cohomology of 2d chiral algebras.

Collection/Series: 
Scientific Areas: 

 

Wednesday Feb 19, 2020
Speaker(s): 

Collection/Series: 

 

Wednesday Feb 19, 2020
Speaker(s): 

We will review the gravitational formula for fine grained entropy. We will discuss how it applies to an evaporating black hole and how we can compute the entropy of Hawking radiation.

Collection/Series: 
Scientific Areas: 

 

Tuesday Feb 18, 2020
Speaker(s): 

Causal reasoning is vital for effective reasoning in science and medicine. In medical diagnosis, for example, a doctor aims to explain a patient’s symptoms by determining the diseases causing them. This is because causal relations---unlike correlations---allow one to reason about the consequences of possible treatments. However, all previous approaches to machine-learning assisted diagnosis, including deep learning and model-based Bayesian approaches, learn by association and do not distinguish correlation from causation.

Collection/Series: 
Scientific Areas: 

Pages