Bose-Fermi mixtures in 1D optical superlattices

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dc.creatorSchmitt, F.
dc.creatorHild, M.
dc.creatorRoth, R.
dc.date2006-06-09
dc.date.accessioned2026-07-07T07:39:34Z
dc.date.available2026-07-07T07:39:34Z
dc.descriptionThe zero temperature phase diagram of binary boson-fermion mixtures in two-colour superlattices is investigated. The eigenvalue problem associated with the Bose-Fermi-Hubbard Hamiltonian is solved using an exact numerical diagonalization technique, supplemented by an adaptive basis truncation scheme. The physically motivated basis truncation allows to access larger systems in a fully controlled and very flexible framework. Several experimentally relevant observables, such as the matter-wave interference pattern and the condensatefraction, are investigated in order to explore the rich phase diagram. At symmetric half filling a phase similar to the Mott-insulating phase in a commensurate purely bosonic system is identified and an analogy to recent experiments is pointed out. Furthermore a phase of complete localization of the bosonic species generated by the repulsive boson-fermion interaction is identified. These localized condensates are of a different nature than the genuine Bose-Einstein condensates in optical lattices.
dc.description18 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0606255
dc.identifierhttp://arxiv.org/abs/cond-mat/0606255
dc.identifierJ. Phys. B: At. Mol. Opt. Phys. 40 (2007) 371-385
dc.identifierdoi:10.1088/0953-4075/40/2/010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/121496
dc.subjectStatistical Mechanics
dc.titleBose-Fermi mixtures in 1D optical superlattices
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