| Literature DB >> 12906524 |
S Richard1, F Gerbier, J H Thywissen, M Hugbart, P Bouyer, A Aspect.
Abstract
We measure the axial momentum distribution of Bose-Einstein condensates with an aspect ratio of 152 using Bragg spectroscopy. We observe the Lorentzian momentum distribution characteristic of one-dimensional phase fluctuations. The temperature dependence of the width of this distribution provides a quantitative test of quasicondensate theory. In addition, we observe a condensate length consistent with the suppression of density fluctuations, even when phase fluctuations are large.Year: 2003 PMID： 12906524 DOI： 10.1103/PhysRevLett.91.010405
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161