Two-particle self-consistent method for the multi-orbital Hubbard model

  • 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.
Metadaten
Author:Karim ZantoutORCiDGND, Steffen BackesORCiDGND, Roser ValentíORCiDGND
URN:urn:nbn:de:hebis:30:3-638711
DOI:https://doi.org/10.1002/andp.202000399
ISSN:1521-3889
Parent Title (German):Annalen der Physik
Publisher:Wiley-VCH
Place of publication:Berlin
Document Type:Article
Language:English
Date of Publication (online):2021/01/15
Date of first Publication:2021/01/15
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2022/03/16
Tag:correlated electrons; multi-orbital Hubbard model; non-perturbative methods
Volume:533
Issue:2, art. 2000399
Page Number:19
First Page:1
Last Page:19
Note:
R.V. acknowledges the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) for funding through TRR 288 - 422213477 (project B05).
HeBIS-PPN:49337776X
Institutes:Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0