Fermi linearization scheme for itinerant electrons with Clifford variables

@article{Montorsi1992FermiLS,
  title={Fermi linearization scheme for itinerant electrons with Clifford variables},
  author={Arianna Montorsi and Alessandro Pelizzola},
  journal={Journal of Physics A},
  year={1992},
  volume={25},
  pages={5815-5822}
}
The authors propose an alternative interpretation of the Fermi linearization approach to interacting electron systems, based on the requirement that the coefficients of the linearized operators are Clifford-like variables, whose anticommutator equals an unknown constant c. They apply the approximation to the Falicov-Kimball model (1969), explicitly solving the self-consistency equation for the unknown, which turns out to behave as an order parameter. They discuss its relation with a metal… 
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TLDR
Two competing tendencies are investigated, which determine the dependence of {ital x}{sub {ital c}} on the bandwidth of the holes, which cause antiferromagnetism to disappear at a critical density, beyond which superconductivity occurs.
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