Corpus ID: 117916387

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

@article{Jcedrak2010StatisticallyconsistentGA,
  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},
  year={2010}
}
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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  • M. Wysokiński, J. Spalek
  • Physics, Medicine
  • Journal of physics. Condensed matter : an Institute of Physics journal
  • 2014
TLDR
The Hubbard model in an applied magnetic field is discussed and the properties of neutral spin fermions within the so-called statistically consistent Gutzwiller approximation are analyzed and a metamagnetic-like behavior is also singled out in a non-half-filled band case. Expand

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