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.

 

  

 

Wednesday Oct 23, 2013
Speaker(s): 

Ordinary differential equations become much less ordinary
when they are allowed to have singularities. 
Solving them naively in formal power series, one often obtains divergent
series, just as in the perturbation series for physical observables in quantum
field theory.

Collection/Series: 

 

Wednesday Oct 23, 2013
Speaker(s): 

The concept of wall-crossing structure (WCS for short) was introduced
recently in my joint work with Maxim Kontsevich. WCS appear in different
disguises in the theory of Donaldson-Thomas invariants of Calabi-Yau
3-folds, quiver representations,integrable systems of Hitchin type,
cluster algebras, Mirror Symmetry, etc.
I plan to discuss the
definition of WCS and illustrate it in several well-known examples. If
time permits I will speak about a special class of WCS called rational

Collection/Series: 

 

Tuesday Oct 22, 2013
Speaker(s): 

Hermitian matrix models have been used since the early days of 2d
quantum gravity, as generating series of discrete surfaces, and
sometimes toy models for string theory. The single trace matrix models
(with measure dM exp( - N Tr V(M)) have been solved in a 1/N expansion
in the 90s by the moment method of Ambjorn et al. Later, Eynard showed
that it can be rewritten more intrinsically in terms of algebraic
geometry of the spectral curve, and formulated the so-called topological
recursion.

Collection/Series: 

 

Tuesday Oct 22, 2013
Speaker(s): 

We use Wilsonian RG and large N techniques to
study the quantum field theory of a critical boson interacting with a Fermi
surface, and compare/contrast the results with those coming from holography.

Collection/Series: 
Scientific Areas: 

 

Tuesday Oct 22, 2013
Speaker(s): 

I will review some ongoing work on the low energy properties of D-branes/boundary conditions in massive two-dimensional field theories with (2,2) supersymmetry.

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