Breakdown of the Luttinger sum-rule at the Mott-Hubbard transition in the one-dimensional t1-t2 Hubbard model

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dc.creatorGros, Claudius
dc.creatorHamacher, Kay
dc.creatorWenzel, Wolfgang
dc.date2004-03-23
dc.date2004-09-17
dc.date.accessioned2026-07-07T02:57:13Z
dc.date.available2026-07-07T02:57:13Z
dc.descriptionWe investigate the momentum distribution function near the Mott-Hubbard transition in the one-dimensional t1-t2 Hubbard model (the zig-zag Hubbard chain), with the density-matrix renormalization-group technique. We show that for strong interactions the Mott-Hubbard transition occurs between the metallic-phase and an insulating dimerized phase with incommensurate spin excitations, suggesting a decoupling of magnetic and charge excitations not present in weak coupling. We illustrate the signatures for the Mott-Hubbard transition and the commensurate-incommensurate transition in the insulating spin-gapped state in their respective ground-state momentum distribution functions.
dc.identifierhttps://arxiv.org/abs/cond-mat/0403580
dc.identifierhttp://arxiv.org/abs/cond-mat/0403580
dc.identifierEurophysics Lett. 69, 616 (2005)
dc.identifierdoi:10.1209/epl/i2004-10379-x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23581
dc.subjectStrongly Correlated Electrons
dc.titleBreakdown of the Luttinger sum-rule at the Mott-Hubbard transition in the one-dimensional t1-t2 Hubbard model
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