Roton spectroscopy in a harmonically trapped dipolar Bose-Einstein condensate
classification
❄️ cond-mat.quant-gas
keywords
rotonbose-einsteincondensatedynamicharmonicallyspectroscopyspectrumstructure
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We study a harmonically trapped Bose-Einstein condensate with dipole-dipole interactions in a regime where a roton spectrum emerges. We show that the roton spectrum is clearly revealed in the static and dynamic structure factors which can be measured using Bragg spectroscopy. We develop and validate a theory based on the local density approximation for the dynamic structure factor.
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