Upcoming Department Colloquia

Thu, 2017-10-19 16:00 - 17:00
Martin Barlow (UBC Mathematics)

A random walk on a graph G has anomalous diffusion if the mean square deviation after n steps is sublinear in n. Systems that have, or are expected to have, anomalous diffusion include some regular exact fractals, and random graphs at their critical point. I will discuss these, and in particular what we know about diffusion on critical percolation, the uniform spanning tree, and random planar triangulations.

Hennings 201
Thu, 2017-10-26 16:00 - 17:00
Levon Pogosian (SFU)

While cosmic acceleration is well-established, the nature of Dark Energy causing it remains unknown. A flat universe dominated by a cosmological constant (Lambda) and cold dark matter (CDM) has been cosmologists’ working model of choice for nearly two decades. However, the value of Lambda poses a serious theoretical challenge, exposing a gap in our understanding of the vacuum energy and the way it gravitates. Intriguingly, there appear to be tensions between different datasets within the LCDM framework that would be relieved if Dark Energy was non-constant.

Hennings 201
Thu, 2017-11-02 16:00 - 17:00
TBD
Brett Gladman (UBC)
Hennings 201
Thu, 2017-11-09 16:00 - 17:00
Victor Gurarie (U of Colorado)

Ultra-quantum matter is the proposed umbrella term to describe states of matter made of quantum particles with long range quantum entanglement among them. These states of matter lie outside the standard Landau classification of phases of matter by broken symmetries, where solid is distinct from liquid because its crystalline lattice breaks translational invariance. Typically ultra-quantum matter does not break any symmetries despite forming distinct phases of matter.

Henning 201
Thu, 2017-11-16 16:00 - 17:00
TBA
CongJun Wu (UCSD)
Henning 201
Thu, 2017-11-23 16:00 - 17:00
TBA
Jame Pinfold (University of Alberta)
Hennings 201
Thu, 2017-11-30 16:00 - 17:00
LIGO
Barry Barish (Caltech)
Hennings 201
Thu, 2017-12-07 16:00 - 17:00
TBD
David Kaplan (Johns Hopkins)
Hennings 201
Thu, 2018-01-11 16:00 - 17:00
TBA
Anatoli Polkovnikov (Boston U.)
Henning 201
Thu, 2018-02-08 16:00 - 17:00
TBA
Hong Liu (MIT)
Henning 201
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