Multi-band D-TRILEX approach to materials with strong electronic correlations
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...
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| creator | Vandelli, Matteo Kaufmann, Josef El-Nabulsi, Mohammed Harkov, Viktor Lichtenstein, Alexander I Stepanov, Evgeny A |
| description | 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 interactions. 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. |
| doi_str_mv | 10.48550/arxiv.2204.06426 |
| format | Article |
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| subjects | Electronic systems Physics - Strongly Correlated Electrons Unit cell |
| title | Multi-band D-TRILEX approach to materials with strong electronic correlations |
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