Electron-phonon Interaction close to a Mott transition

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dc.creatorSangiovanni, G.
dc.creatorCapone, M.
dc.creatorCastellani, C.
dc.creatorGrilli, M.
dc.date2004-09-20
dc.date2005-01-19
dc.date.accessioned2026-07-07T08:22:25Z
dc.date.available2026-07-07T08:22:25Z
dc.descriptionThe effect of Holstein electron-phonon interaction on a Hubbard model close to a Mott-Hubbard transition at half-filling is investigated by means of Dynamical Mean-Field Theory. We observe a reduction of the effective mass that we interpret in terms of a reduced effective repulsion. When the repulsion is rescaled to take into account this effect, the quasiparticle low-energy features are unaffected by the electron-phonon interaction. Phonon features are only observed within the high-energy Hubbard bands. The lack of electron-phonon fingerprints in the quasiparticle physics can be explained interpreting the quasiparticle motion in terms of rare fast processes.
dc.description4 pages, 3 color figures. Slightly revised text and references. Kondo effect result added in Fig. 2 for comparison with DMFT data
dc.identifierhttps://arxiv.org/abs/cond-mat/0409510
dc.identifierhttp://arxiv.org/abs/cond-mat/0409510
dc.identifierPhys. Rev. Lett. 94, 026401 (2005)
dc.identifierdoi:10.1103/PhysRevLett.94.026401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135647
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleElectron-phonon Interaction close to a Mott transition
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