Lee, Seung-Sup B.; Delft, Jan von; Weichselbaum, Andreas (2017): Generalized Schrieffer-Wolff transformation of multiflavor Hubbard models. In: Physical Review B, Vol. 96, No. 24, 245106 |
Abstract
We give a self-contained derivation of the low-energy effective interactions of the SU(N) Hubbard model, a multiflavor generalization of the one-bandHubbard model, by using a generalized Schrieffer-Wolff transformation (SWT). The effective interaction of doublons and holons, which has been largely ignored in previous SWT studies (e.g., the t - J model), leads to distinct peaks in the local density of states. As shown by Lee et al. [Phys. Rev. Lett. 119, 236402 (2017)], this underlying effective doublon-holon interaction explains the numerical observation of the subpeaks at the inner edges of the Hubbard bands in the metallic phase close to the Mott transition.
Item Type: | Journal article |
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Faculties: | Physics |
Research Centers: | Center for NanoScience (CENS) |
Subjects: | 500 Science > 530 Physics 500 Science > 500 Science |
ISSN: | 2469-9950 |
Language: | English |
ID Code: | 53512 |
Deposited On: | 14. Jun 2018 09:53 |
Last Modified: | 04. Nov 2020 13:32 |