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

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Abstract

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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Authors and Affiliations

  1. Faculty of Physics, Havana University, 10400, Havana, Cuba

    C. Trallero-Giner, Y. Núñez-Fernández & M. Oliva

  2. Departamento de Fisica, Universidade Federal de São Carlos, 13.565-905, São Carlos, São Paulo, Brazil

    C. Trallero-Giner, V. López-Richard & G. E. Marques

  3. Physics Division, National Center for Theoretical Science, 30013, Hsinchu, Taiwan

    M. C. Chung

Authors
  1. C. Trallero-Giner
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  2. V. López-Richard
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  3. Y. Núñez-Fernández
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  4. M. Oliva
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  5. G. E. Marques
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  6. M. C. Chung
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Correspondence to V. López-Richard.

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Trallero-Giner, C., López-Richard, V., Núñez-Fernández, Y. et al. Superfluidity and collective oscillations of trapped Bose-Einstein condensates in a periodical potential. Eur. Phys. J. D 66, 177 (2012). https://doi.org/10.1140/epjd/e2012-30179-0

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  • DOI: https://doi.org/10.1140/epjd/e2012-30179-0

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