Dual Fermion outperforms DMFT on thermodynamics, electronic structure and susceptibilities for the Falicov-Kimball model but is less accurate for orbital density versus chemical potential in the doped regime.
Dagotto, Correlated electrons in high-temperature superconductors, Reviews of Modern Physics66, 763 (1994)
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Benchmarking the Dual Fermion approach on the Falicov-Kimball model
Dual Fermion outperforms DMFT on thermodynamics, electronic structure and susceptibilities for the Falicov-Kimball model but is less accurate for orbital density versus chemical potential in the doped regime.