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arXiv · 1206.2770

Roton spectroscopy in a harmonically trapped dipolar Bose-Einstein condensate

P. B. Blakie·D. Baillie·R. N. Bisset
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Abstract

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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P. B. Blakie, D. Baillie, R. N. Bisset. 2012-06-13. Roton spectroscopy in a harmonically trapped dipolar Bose-Einstein condensate. https://doi.org/10.1103/physreva.86.021604

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