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. 

  

 

Thursday Mar 05, 2015
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Wednesday Mar 04, 2015
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Marcia Barbosa,

Universidade Federal do Rio Grande do Sul

Water Stress:

Seeking Solutions in the

Unusual Properties of Water

Perimeter Institute Public Lecture

WEDNESDAY, March 4 at 7:00 pm

Mike Lazaridis Theatre of Ideas

Perimeter Institute

31 Caroline St. N., Waterloo

 

Wednesday Mar 04, 2015
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We study the separability of quantum states in bosonic system. Our main tool here is the "separability witnesses", and a connection between "separability witnesses" and a new kind of positivity of matrices--- "Power Positive Matrices" is drawn. Such connection is employed to demonstrate that multi-qubit quantum states with Dicke states being its eigenvectors is separable if and only if two related Hankel matrices are positive semidefinite.

 

Wednesday Mar 04, 2015
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We investigate through non-equilibrium molecular dynamic simulations the flow of anomalous

fluids inside rigid nanotubes. Our results reveal an anomalous increase of the overall mass flux

for nanotubes with sufficiently smaller radii. This is explained in terms of a transition from a

single-file type of flow to the movement of an ordered-like fluid as the nanotube radius increases.

The occurrence of a global minimum in the mass flux at this transition reflects the competition

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Wednesday Mar 04, 2015
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Wednesday Mar 04, 2015
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The remnant accretion disk formed in binaries involving neutron stars and/or black holes is a source of non-relativistic ejecta. This 'disk wind' is launched on a thermal and/or viscous timescale, and can provide an amount of material comparable to that in the dynamical ejecta. I will present recent work aimed at characterizing

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Wednesday Mar 04, 2015
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Wednesday Mar 04, 2015
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Tuesday Mar 03, 2015

The talk will be based on a work in progress with Stefano Kovacs

(Dublin IAS) and Yuki Sato (Wits University). In a previous work

(arxiv:1310.0016) we have shown that,

in the M-theory regime (large N with the Chern-Simon level k fixed)

of the duality between ABJM theory and M-theory on AdS4 x S7/Zk,

certain monopole operators with large R charges on the gauge theory side

correspond to spherical membranes

(which is in general in non-BPS excited states) in the pp-wave matrix

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Tuesday Mar 03, 2015
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It is not known how to explain the excess of matter over antimatter with the Standard Model. This matter asymmetry can be accounted for in certain extensions of the Standard Model through the mechanism of electroweak baryogenesis (EWBG), in which the extra baryons are created in the early Universe during the electroweak phase transition.

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