Multi-band D-TRILEX approach to materials with strong electronic correlations
SCIPOST PHYSICS(2022)
摘要
We present the multi-band dual triply irreducible local expansion (D-TRILEX) approach to interacting electronic systems and discuss its numerical implementation. This method is designed for a self-consistent description of multi-orbital systems that can also have several atoms in the unit cell. The current implementation of the D-TRILEX approach is able to account for the frequency-and channel-dependent long-ranged electronic inter-actions. We show that our method is accurate when applied to small multi-band systems such as the Hubbard-Kanamori dimer. Calculations for the extended Hubbard, the two -orbital Hubbard-Kanamori, and the bilayer Hubbard models are also discussed.
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关键词
multi-band,d-trilex
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