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Please use this identifier to cite or link to this item: http://hdl.handle.net/2307/73

Title: Gutzwiller scheme for electrons and phonons: The half-filled Hubbard-Holstein model
Authors: Barone, Paolo
Raimondi, Roberto
Capone, Massimo
Castellani, Claudio
Fabrizio, Michele
Keywords: bipolarons
metal-insulator transition
electron-phonon interactions
strongly correlated electron systems
Issue Date: 2008
Abstract: We analyze the ground-state properties of strongly correlated electrons coupled with phonons by means of a generalized Gutzwiller wave function, which includes phononic degrees of freedom. We study in detail the paramagnetic half-filled Hubbard-Holstein model, where the electron-electron interaction can lead to a Mott transition and the electron-phonon coupling to a bipolaronic transition. We critically discuss the quality of the proposed wave function in describing the various transitions and c
...more
URI: http://hdl.handle.net/2307/73
DOI: 10.1103/PhysRevB.77.235115
Appears in Collections:A - Articolo su rivista
Dipartimento di Fisica 'Edoardo Amaldi'

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