Exact Mapping of Periodic Anderson Model to Kondo Lattice Model
P. Sinjukow, W. Nolting
TL;DR
This paper demonstrates an exact mapping from the periodic Anderson model to the Kondo lattice model, enabling a direct proof of the large Fermi volume in a nonmagnetic Fermi-liquid state.
Contribution
It provides an exact derivation of the Kondo lattice model from the periodic Anderson model for any finite coupling J.
Findings
Confirmed the large Fermi volume in the nonmagnetic Fermi-liquid state.
Established a precise theoretical link between the two models.
Enabled new insights into the electronic structure of heavy fermion systems.
Abstract
It is shown that the Kondo lattice model, for any finite coupling constant J, can be obtained exactly from the periodic Anderson model in an appropriate limit. The mapping allows a direct proof of the 'large' Fermi volume for a nonmagnetic Fermi-liquid state of the Kondo lattice model.
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