Momentum spectroscopy of 1D phase fluctuations in Bose-Einstein condensates

Preprint

7 March 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0303137

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 quasi-condensate theory. In addition, we observe a condensate length consistent with the absence of density fluctuations, even when phase fluctuations are large.

Keywords

MOMENTUM SPECTROSCOPY
EINSTEIN CONDENSATES
PHASE FLUCTUATIONS
BOSE EINSTEIN
SPECTROSCOPY
ASPECT RATIO
1D PHASE

All Related Versions

Version 1, 2003-03-07, ArXiv
Version 1, 2003-09-11, ArXiv (Unconfirmed version)
Published version: Physical Review Letters, 91 (1), 010405.

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