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 

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







Wednesday Jun 20, 2018


Wednesday Jun 20, 2018

It is well known that the dimension of conserved currents is determined
simply from dimensional analysis. However, a recent proposal is that what
is strange about the conserved currents in the strange metal in the
cuprate superconductors is that they carry anomalous dimensions. The
basic model invoked to exhibit such behaviour is a holographic dilatonic
one in which the field strength couples to the radial coordinate. I will
show that the anomalous dimension in such cases arises from a fractional



Wednesday Jun 20, 2018

I will discuss recent discovery that elasticity theory of a two-dimensional crystal is dual to a fracton tensor gauge theory, providing a concrete manifestation of the fracton phenomenon in an ordinary solid. The topological defects of elasticity theory map onto charges of the tensor gauge theory, with disclinations and dislocations corresponding to fractons and dipoles, respectively. The transverse and longitudinal phonons of crystals map onto the two gapless gauge modes of the gauge theory. The restricted dynamics of fractons matches with constraints on the mobility of lattice defects.


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