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

Tomadin, Andrea and Mannella, Riccardo and Wimberger, Sandro (2008) Many-body Landau-Zener tunneling in the Bose-Hubbard model. Physical review a, 77 (1): 013606. ISSN 1050-2947

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We 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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review a
Uncontrolled Keywords:
?? atomic and molecular physics, and optics ??
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Deposited On:
22 Nov 2018 11:04
Last Modified:
15 Jul 2024 18:38