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

  • C. Trallero-Giner
  • V. López-Richard
  • Y. Núñez-Fernández
  • M. Oliva
  • G. E. Marques
  • M. C. Chung
Regular Article

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.

Keywords

Cold Matter and Quantum Gas 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • C. Trallero-Giner
    • 1
    • 2
  • V. López-Richard
    • 2
  • Y. Núñez-Fernández
    • 1
  • M. Oliva
    • 1
  • G. E. Marques
    • 2
  • M. C. Chung
    • 3
  1. 1.Faculty of PhysicsHavana UniversityHavanaCuba
  2. 2.Departamento de FisicaUniversidade Federal de São CarlosSão Carlos, São PauloBrazil
  3. 3.Physics DivisionNational Center for Theoretical ScienceHsinchuTaiwan

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