Lörch, N. and Pepe, F. V. and Lignier, H. and Ciampini, D. and Mannella, R. and Morsch, O. and Arimondo, E. and Facchi, P. and Florio, G. and Pascazio, S. and Wimberger, S. (2012) Wave Function Renormalization Effects in Resonantly Enhanced Tunneling. Physical review. A, Atomic, Molecular, and Optical Physics, 85 . 053602. ISSN 1094-1622
Full text not available from this repository.Abstract
We study the time evolution of ultra-cold atoms in an accelerated optical lattice. For a Bose- Einstein condensate with a narrow quasi-momentum distribution in a shallow optical lattice the decay of the survival probability in the ground band has a step-like structure. In this regime we establish a connection between the wave function renormalization parameter Z introduced in [Phys. Rev. Lett. 86, 2699 (2001)] to characterize non-exponential decay and the phenomenon of resonantly enhanced tunneling, where the decay rate is peaked for particular values of the lattice depth and the accelerating force.
Item Type: | Article |
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Additional Information: | Imported from arXiv |
Subjects: | Area02 - Scienze fisiche > FIS/03 - Fisica della materia |
Divisions: | Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA |
Depositing User: | dott.ssa Sandra Faita |
Date Deposited: | 30 Jul 2013 12:52 |
Last Modified: | 30 Jul 2013 12:52 |
URI: | http://eprints.adm.unipi.it/id/eprint/1290 |
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