Complete Pseudoparticle Representation and the Conductivity Spectrum of the Hubbard Chain

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dc.creatorCarmelo, J. M. P.
dc.creatorPeres, N. M. R.
dc.creatorCampbell, D. K.
dc.date1996-09-30
dc.date1997-01-07
dc.date.accessioned2026-07-07T09:02:32Z
dc.date.available2026-07-07T09:02:32Z
dc.descriptionWe use a complete pseudoparticle operator representation to study the explicit form of the finite-frequency conductivity for the Hubbard chain. Our study reveals that the spectral weight is mostly concentrated at the ω=0 Drude peak (except at density n=1) and at an absorption starting just below twice the value of the chemical potential whose ω-dependence we evaluate exactly. We also obtain the exact ωdependence of the higher-energy, less-pronounced absorption edges, whose weights vanish for large on-site interaction U.
dc.descriptionLaTeX file, no figures, 11 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/9609291
dc.identifierhttp://arxiv.org/abs/cond-mat/9609291
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/148664
dc.subjectCondensed Matter
dc.titleComplete Pseudoparticle Representation and the Conductivity Spectrum of the Hubbard Chain
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