Corpus ID: 117916387

Statistically-consistent Gutzwiller approach and its equivalence with the mean-field slave-boson method for correlated systems

  title={Statistically-consistent Gutzwiller approach and its equivalence with the mean-field slave-boson method for correlated systems},
  author={Jakub Jcedrak and Jan Kaczmarczyk and J{\'o}zef Spalek},
  journal={arXiv: Strongly Correlated Electrons},
We propose a new method of solving a class of mean-field (MF) models, which is based on the Maximum Entropy (MaxEnt) principle with additional constraints included. Next, we show equivalence of our method when applied to the Gutzwiller approximation (GA), with the mean-field slave-boson (SB) formalism (on the example of the single-band Hubbard model). This equivalence provides thus an alternative justification of the results obtained within the SB approach which, however, contains ad hoc… Expand
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