Relevance of phonon dynamics in strongly correlated systems coupled to phonons: A Dynamical Mean Field Theory analysis

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dc.creatorSangiovanni, Giorgio
dc.creatorCapone, Massimo
dc.creatorCastellani, Claudio
dc.date2005-12-01
dc.date2006-04-26
dc.date.accessioned2026-07-07T08:22:39Z
dc.date.available2026-07-07T08:22:39Z
dc.descriptionThe properties of the electron-phonon interaction in the presence of a sizable electronic repulsion at finite doping are studied by investigating the metallic phase of the Hubbard-Holstein model with Dynamical Mean Field Theory. Analyzing the quasiparticle weight at finite doping, we find that a large Coulomb repulsion reduces the effect of electron-phonon coupling at low-energy, while this reduction is not present at high energy. The renormalization of the electron-phonon coupling induced by the Hubbard repul sion depends in a surprisingly strong and non-trivial way on the phonon frequency. Our results suggest that phonon might affect differently high-energy and low-energy properties and this, together with the effect of phonon dynamics, should be carefully taken into account when the effects of the electron-phonon interaction in a strongly correlated system, like the superconducting cuprates, are discussed.
dc.description10 pages, 7 figures - revised version with minor changes
dc.identifierhttps://arxiv.org/abs/cond-mat/0512020
dc.identifierhttp://arxiv.org/abs/cond-mat/0512020
dc.identifierPhys. Rev. B 73, 165123 (2006)
dc.identifierdoi:10.1103/PhysRevB.73.165123
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135722
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleRelevance of phonon dynamics in strongly correlated systems coupled to phonons: A Dynamical Mean Field Theory analysis
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