University of Illinois
Are high-temperature superconductors full of Unparticles?
I will begin this colloquium by using the standard procedure in condensed matter to count particles. For strongly correlated models relevant to high-temperature superconductors, I will show that this procedure cannot account for all the charged degrees of freedom. The charged stuff which is left out cannot be given an interpretation in terms of particles. I will argue that the unparticle construction of Howard Georgi's makes up the difference. I will show how a gravity dual can be used to determine the scaling dimension for unparticles.
I will close by elucidating a possible superconducting instability of unparticles and demonstrate that unparticle stuff is likely to display fractional statistics in the dimensionalities of interest for strongly correlated electron matter.
Monday, 27 January, 2014
Department of Physics and Astronomy
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Knoxville, TN USA
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