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EnglishWe analyze the Mott transition in multi-band Hubbard models with the inclusion of multiplet exchange splittings as it arises in infinite dimensions by using the generalized Gutzwiller wave-function introduced by B\"unemann, Weber and Gebhard [Phys. Rev. B 57, 6896 (1998)]. We also present an extension of that variational wave-function to account for broken-symmetry phases, which still allows an exact analytical treatment. Our analysis reveals some drawbacks of the variational wave-function, which, in our opinion, imply that Gutzwiller-type of wave-functions do not properly capture quasi-particle properties close to a Mott transition.
Properties of Gutzwiller wave functions for multiband models / Attaccalite, C; Fabrizio, Michele. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 68:15(2003), pp. 1-14.
| Titolo: | Properties of Gutzwiller wave functions for multiband models | |
| Autori: | Attaccalite, C; Fabrizio, Michele | |
| Rivista: | ||
| Data di pubblicazione: | 2003 | |
| Volume: | 68 | |
| Fascicolo: | 15 | |
| Pagina iniziale: | 1 | |
| Pagina finale: | 14 | |
| Numero di Articolo: | 155117 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevB.68.155117 | |
| URL: | https://arxiv.org/abs/cond-mat/0304183 | |
| Appare nelle tipologie: | 1.1 Journal article |
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