Excitation of phonons in a Bose-Einstein condensate by light scattering
Condensed Matter
2016-08-15 v2
Abstract
Stimulated small-angle light scattering was used to measure the structure factor of a Bose-Einstein condensate in the phonon regime. The excitation strength for phonons was found to be significantly reduced from that of free particles, revealing the presence of correlated pair excitations and quantum depletion in the condensate. The Bragg resonance line strength and line shift agreed with predictions of a local density approximation.
Cite
@article{arxiv.cond-mat/9906035,
title = {Excitation of phonons in a Bose-Einstein condensate by light scattering},
author = {D. M. Stamper-Kurn and A. P. Chikkatur and A. Görlitz and S. Inouye and S. Gupta and D. E. Pritchard and W. Ketterle},
journal= {arXiv preprint arXiv:cond-mat/9906035},
year = {2016}
}
Comments
4 pages, 3 figures