Derives an exact downfolded effective model by integrating out the rest space, states conditions for perturbative truncation, and formally recovers cRPA with corrections.
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DMFT on a single-band Hubbard model for Ni3In shows non-Fermi-liquid self-energy and local moments at moderate U, with crossover to heavy Fermi liquid upon hole doping.
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Exact downfolding and its perturbative approximation
Derives an exact downfolded effective model by integrating out the rest space, states conditions for perturbative truncation, and formally recovers cRPA with corrections.
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Strange metallicity in the Kagome metal Ni$_3$In: a DMFT investigation
DMFT on a single-band Hubbard model for Ni3In shows non-Fermi-liquid self-energy and local moments at moderate U, with crossover to heavy Fermi liquid upon hole doping.