Bragg spectroscopy of a strongly interacting Bose-Einstein condensate

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 significantly alter the observed excitation spectrum by creating a novel pairing channel of mobile pairs.

11 pages, 4 figures

References in corpus (3)

• Fragmentation of Bose-Einstein Condensates
• Bragg spectroscopy of a strongly interacting 85Rb Bose-Einstein condensate
• Collapsing Bose-Einstein condensates beyond the Gross-Pitaevskii approximation

Cited by in corpus (8)

• Detecting the Amplitude Mode of Strongly Interacting Lattice Bosons by Bragg Scattering
• Quasiparticle energy in a strongly interacting homogeneous Bose-Einstein condensate
• Strongly correlated Bose gases
• Induced interactions in a superfluid Bose-Fermi mixture
• Bragg spectroscopy of a superfluid Bose-Hubbard gas
• Hartree shift in unitary Fermi gases
• Resonant scattering effect in spectroscopies of interacting atomic gases
• Supersolid phase in two-dimensional soft-core bosons at finite temperature