Field-dependent quasiparticles in the infinite-dimensional Hubbard model

  title={Field-dependent quasiparticles in the infinite-dimensional Hubbard model},
  author={Johannes Bauer and A. C. Hewson},
  journal={Physical Review B},
We present dynamical mean-field theory (DMFT) results for the local spectral densities of the one- and two-particle response functions for the infinite-dimensional Hubbard model in a magnetic field. We look at the different regimes corresponding to half-filling, near half-filling, and well away from half-filling, for intermediate and strong values of the local interaction $U$. The low energy results are analyzed in terms of quasiparticles with field-dependent parameters. These renormalized… 

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  • SasoItoh
  • Physics
    Physical review. B, Condensed matter
  • 1996
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