Low Energy Challenges for High Energy Physicists 3

Low Energy Challenges for High Energy Physicists 3

 

 

 

 

Wednesday Jun 20, 2018
Speaker(s): 
 

 

Wednesday Jun 20, 2018
Speaker(s): 

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
Speaker(s): 

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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