TY  - JOUR
A1  - Zantout, Karim
A1  - Backes, Steffen
A1  - Valentí, Roser
T1  - Two-particle self-consistent method for the multi-orbital Hubbard model
T2  - Annalen der Physik
N2  - One of the most challenging problems in solid state systems is the microscopic analysis of electronic correlations. A paramount minimal model that encodes correlation effects is the Hubbard Hamiltonian, which—regardless of its simplicity—is exactly solvable only in a few limiting cases and approximate many-body methods are required for its solution. In this review, an overview on the non-perturbative two-particle self-consistent method (TPSC), which was originally introduced to describe the electronic properties of the single-band Hubbard model, is presented. A detailed derivation of the multi-orbital generalization of TPSC is introduced here and particular features of the method on exemplary interacting models in comparison to dynamical mean-field theory results are discussed.
KW  - correlated electrons
KW  - multi-orbital Hubbard model
KW  - non-perturbative methods
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/63871
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-638711
SN  - 1521-3889
N1  - R.V. acknowledges the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for funding through TRR 288 - 422213477 (project B05).
VL  - 533
IS  - 2, art. 2000399
SP  - 1
EP  - 19
PB  - Wiley-VCH
CY  - Berlin
ER  -