Bragg spectroscopy of a strongly interacting Bose-Einstein condensate

J. J. Kinnunen*, M. J. Holland

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We study Bragg spectroscopy of a strongly interacting Bose Einstein condensate using time-dependent Hartree-Fock-Bogoliubov theory. We include approximatively the effect of the momentum-dependent scattering amplitude which is shown to be the dominant factor in determining the spectrum for large momentum Bragg scattering. The condensation of the Bragg scattered atoms is shown to alter significantly the observed excitation spectrum by creating a novel pairing channel of mobile pairs.

Original languageEnglish
Article number013030
Number of pages12
JournalNew Journal of Physics
Volume11
DOIs
Publication statusPublished - 20 Jan 2009
MoE publication typeA1 Journal article-refereed

Keywords

  • HARD SPHERES
  • GROUND-STATE
  • SYSTEM
  • EXCITATION
  • SPECTRUM
  • GAS

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