Quantum Phase Transition in Extended Attractive Hubbard Model

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dc.creatorSaito, S.
dc.creatorYoshimoto, H.
dc.creatorSuzuki, Y. Y.
dc.creatorKurihara, S.
dc.date2000-02-18
dc.date2000-02-19
dc.date.accessioned2026-07-07T02:36:48Z
dc.date.available2026-07-07T02:36:48Z
dc.descriptionWe have made a variational analysis on an evolution of superconductivity from weak to strong coupling regime. In contrast to a crossover without thermodynamic anomaly found in a dilute system, we show the existence of a quantum phase transition near half filling. The transition is driven by charge density waves instabilities. We have found that superconductivity and charge density waves coexist in the presence of a weak intersite repulsion. The ground state phase diagram is determined and the quantum phase transition is an attractive version of the Mott transition.
dc.description4 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0002288
dc.identifierhttp://arxiv.org/abs/cond-mat/0002288
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16058
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleQuantum Phase Transition in Extended Attractive Hubbard Model
dc.typetext

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