Antiferromagnetism and single-particle properties in the two-dimensional half-filled Hubbard model: Slater vs Mott-Heisenberg

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dc.creatorBorejsza, K.
dc.creatorDupuis, N.
dc.date2002-12-17
dc.date2003-06-30
dc.date.accessioned2026-07-07T06:21:46Z
dc.date.available2026-07-07T06:21:46Z
dc.descriptionWe study antiferromagnetism and single-particle properties in the two-dimensional half-filled Hubbard model at low temperature. Collective spin fluctuations are governed by a non-linear sigma model that we derive from the Hubbard model for any value of the Coulomb repulsion. As the Coulomb repulsion increases, the ground state progressively evolves from a Slater to a Mott-Heisenberg antiferromagnet. At finite temperature, we find a metal-insulator transition between a pseudogap phase at weak coupling and a Mott-Hubbard insulator at strong coupling.
dc.descriptionRevised version, to appear in EuroPhys. Letters (epl style included)
dc.identifierhttps://arxiv.org/abs/cond-mat/0212411
dc.identifierhttp://arxiv.org/abs/cond-mat/0212411
dc.identifierEuroPhys. Lett. 63, 722 (2003)
dc.identifierdoi:10.1209/epl/i2003-00584-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/95705
dc.subjectStrongly Correlated Electrons
dc.titleAntiferromagnetism and single-particle properties in the two-dimensional half-filled Hubbard model: Slater vs Mott-Heisenberg
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