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. 

  

 

Wednesday Mar 21, 2012
Speaker(s): 

Abstract The magic state model of quantum computation gives a recipe for universal quantum computation using perfect Clifford operations and repeat preparations of a noisy ancilla state. It is an open problem to determine which ancilla states enable universal quantum computation in this model. Here we show that for systems of odd dimension a necessary condition for a state to enable universal quantum computation is that it have negative representation in a particular quasi-probability representation which is a discrete analogue to the Wigner function.

Scientific Areas: 

 

Wednesday Mar 21, 2012

Mass, a concept familiar to all of us, is also
one of the deepest

mysteries in nature.  Almost all of the mass in the
visible universe,

you, me and any other stuff  that we see around us, emerges from a

quantum field theory, called QCD, which  has a completely negligible

microscopic mass content. How does QCD and the family of
gauge

theories it belongs to  generate a mass?



This class of non-perturbative problems remained largely elusive despite much

Collection/Series: 

 

Tuesday Mar 20, 2012
Speaker(s): 

I'll discuss solutions with Lifshitz scaling within
string supergravity for an arbitrary scaling component z. After showing how to
get exact Lifshitz spacetimes, I'll then look at more general solutions,
including black holes and flows between Lifshitz and adS spacetimes.

Collection/Series: 
Scientific Areas: 

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