Many-body Landau-Zener tunneling in the Bose-Hubbard model

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dc.creatorTomadin, Andrea
dc.creatorMannella, Riccardo
dc.creatorWimberger, Sandro
dc.date2007-11-20
dc.date.accessioned2026-07-07T08:53:10Z
dc.date.available2026-07-07T08:53:10Z
dc.descriptionWe study a model for ultracold, spinless atoms in quasi-one dimensional optical lattices and subjected to a tunable tilting force. Statistical tests are employed to quantitatively characterize the spectrum of the Floquet-Bloch operator of the system along the transition from the regular to the quantum chaotic regime. Moreover, we perturbatively include the coupling of the one-band model to the second energy band. This allows us to study the Landau-Zener interband tunneling within a truly many-body description of ultracold atoms. The distributions of the computed tunneling rates provide an independent and experimentally accessible signature of the regular-chaotic transition.
dc.description10 pages, 6 figures. High-quality figures can be requested to the authors
dc.identifierhttps://arxiv.org/abs/0711.3230
dc.identifierhttp://arxiv.org/abs/0711.3230
dc.identifierPhys. Rev. A 77, 013606 (2008)
dc.identifierdoi:10.1103/PhysRevA.77.013606
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145527
dc.subjectStrongly Correlated Electrons
dc.titleMany-body Landau-Zener tunneling in the Bose-Hubbard model
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