Bragg spectroscopy of a strongly interacting 85Rb Bose-Einstein condensate
Other Condensed Matter
2009-11-13 v1
Abstract
We report on measurements of the excitation spectrum of a strongly interacting Bose-Einstein condensate (BEC). A magnetic-field Feshbach resonance is used to tune atom-atom interactions in the condensate and to reach a regime where quantum depletion and beyond mean-field corrections to the condensate chemical potential are significant. We use two-photon Bragg spectroscopy to probe the condensate excitation spectrum; our results demonstrate the onset of beyond mean-field effects in a gaseous BEC.
Cite
@article{arxiv.0805.0295,
title = {Bragg spectroscopy of a strongly interacting 85Rb Bose-Einstein condensate},
author = {S. B. Papp and J. M. Pino and R. J. Wild and S. Ronen and C. E. Wieman and D. S. Jin and E. A. Cornell},
journal= {arXiv preprint arXiv:0805.0295},
year = {2009}
}
Comments
4 pages, 3 figures