Electronic properties of the degenerate Hubbard Model : A dynamical mean\n field approach

2000/09/18 by P. Lombardo, Pierre Lombardo, Lombardo, Pierre +3
Mathematics · Physics and Astronomy · #Advanced Chemical Physics Studies #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Coulomb #Degenerate energy levels #Density functional theory #Dimension (graph theory) #Dynamical mean field theory #Electron #Electronic structure #FOS: Physical sciences #Field (mathematics) #Hubbard model #Limit (mathematics) #Mathematical analysis #Mathematics #Mean field theory #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Statistical physics #Strongly Correlated Electrons (cond-mat.str-el) #Strongly correlated material #Superconductivity #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.cond-mat/0009253

4 pages, 5 figures

arxiv created 2000/09/18 · openalex publication_date 2000/09/18 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We have investigated electronic properties of the degenerate multi-orbital\nHubbard model, in the limit of large spatial dimension. A new local model,\nincluding a doubly degenerate strongly correlated site has been introduced and\nsolved in the framework of the non-crossing approximation (NCA). Mott-Hubbard\ntransitions have been examined in details, including the calculation of Coulomb\nrepulsion critical values and electronic densities of states for any regime of\nparameters.\n

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