Superfluidity and collective oscillations of trapped Bose-Einstein condensates in a periodical potential

Details Superfluidity and collective oscillations of trapped Bose-Einstein condensates in a periodical potential Superfluidity and collective oscillations of trapped Bose-Einstein condensates in a periodical potential

2011-07-25

arxiv.org/abs/1107.4899v2

Physics

Condensed Matter

Quantum Gases

5 pages and 2 Figs, some errors have been corrected in versions 2

Scientific paper

Based on a unified theoretical treatment of the 1D Bogoliubov-de Genes equations, the superfluidity phenomenon of the Bose-Einstein condensates (BEC) loaded into trapped optical lattice is studied. Within the perturbation regime, an all-analytical framework is presented enabling a straightforward phenomenological mapping of the collective excitation and oscillation character of a trapped BEC where the available experimental configurations also fit.

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