Slave-boson mean-field theory of spin- and orbital-ordered states in the degenerate Hubbard model

Simple item page
dc.creatorHasegawa, Hideo
dc.date2000-05-17
dc.date.accessioned2026-07-07T02:37:39Z
dc.date.available2026-07-07T02:37:39Z
dc.descriptionThe mean-field theory with the use of the slave-boson functional method is generalized to take account of the spin- and orbital-ordered state in the doubly degenerate Hubbard model. Some numerical calculations are presented of the antiferromagnetic orbital-ordered state in the half-filled simple-cubic model. The orbital order in the present theory is much reduced compared with that in the Hartree-Fock approximation because of the large orbital fluctuations. From a comparison of the ground-state energy, the antiferromagnetic orbital state is shown to be unstable against the antiferromagnetic spin state, although the situation becomes reversed when the exchange interaction is {\it negative}.
dc.description14 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/cond-mat/0005271
dc.identifierhttp://arxiv.org/abs/cond-mat/0005271
dc.identifierFoundations of Physics 30 (2000) 2061
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16374
dc.subjectStrongly Correlated Electrons
dc.titleSlave-boson mean-field theory of spin- and orbital-ordered states in the degenerate Hubbard model
dc.typetext

Files

Collections

arXiv