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http://hdl.handle.net/2307/209
Cinwaan: | Lower and upper Hubbard bands: A slave-boson treatment | Qore: | Raimondi, Roberto Castellani, Claudio |
Ereyga furaha: | Strongly correlated electron systems Hubbard model metal-insulator transition slave-boson approach Fermi-liquid |
Taariikhda qoraalka: | 1993 | Tifaftire: | American Physical Society | Xusid: | 10 | Abstract: | We analyze the single-particle spectral density and the optical conductivity of the single-band Hubbard model in the insulating Mott phase within the slave-boson technique. We show that the boson fluctuations around the saddle-point solution build up the lower and upper Hubbard bands and give rise to the optical conductivity which describes transitions between these incoherent bands. We find that the Brinkman-Rice metal-insulator transition is characterized by the simultaneous vanishing of the jump in the chemical potential, the single-particle spectral density gap, and the optical gap. | URI : | http://hdl.handle.net/2307/209 | ISSN : | 1550-235x 1098-0121 |
DOI : | 10.1103/PhysRevB.48.11453 | URL: | http://link.aps.org/doi/10.1103/PhysRevB.48.11453 |
Wuxuu ka dhex muuqdaa ururinnada: | A - Articolo su rivista X_Dipartimento di Fisica 'Edoardo Amaldi' |
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