Un-Fermi liquids: Unparticles in strongly correlated electron matter

@article{Phillips2013UnFermiLU,
  title={Un-Fermi liquids: Unparticles in strongly correlated electron matter},
  author={Philip W. Phillips and Brandon W. Langley and Jimmy A. Hutasoit},
  journal={Physical Review B},
  year={2013},
  volume={88},
  pages={115129}
}
Since any non-trivial infrared dynamics in strongly correlated electron matter must be controlled by a critical fixed point, we argue that the form of the single-particle propagator can be deduced simply by imposing scale invariance. As a consequence, the unparticle picture proposed by Georgi\cite{georgi} is the natural candidate to describe such dynamics. Unparticle stuff is scale-invariant matter with no particular mass. Scale invariance dictates that the propagator has an algebraic form… 
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