Mapping out the quasicondensate transition through the dimensional crossover from one to three dimensions

Armijo, J., Jacqmin, T., Kheruntsyan, K. and Bouchoule, I. (2011) Mapping out the quasicondensate transition through the dimensional crossover from one to three dimensions. Physical Review A, 83 2: 1-4. doi:10.1103/PhysRevA.83.021605

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Author Armijo, J.
Jacqmin, T.
Kheruntsyan, K.
Bouchoule, I.
Title Mapping out the quasicondensate transition through the dimensional crossover from one to three dimensions
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2011-02-01
Year available 2011
Sub-type Article (original research)
DOI 10.1103/PhysRevA.83.021605
Open Access Status File (Publisher version)
Volume 83
Issue 2
Start page 1
End page 4
Total pages 4
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Subject 3107 Atomic and Molecular Physics, and Optics
Abstract By measuring the density fluctuations in a highly elongated weakly interacting Bose gas, we observe and quantify the transition from the ideal gas to a quasicondensate regime throughout the dimensional crossover from a purely one-dimensional (1D) to an almost three-dimensional (3D) gas. We show that that the entire transition region and the dimensional crossover are described surprisingly well by the modified Yang-Yang model. Furthermore, we find that at low temperatures the linear density at the quasicondensate transition scales according to an interaction-driven scenario of a longitudinally uniform 1D Bose gas, whereas at high temperatures it scales according to the degeneracy-driven critical scenario of transverse condensation of a 3D ideal gas.
Formatted abstract
By measuring the density fluctuations in a highly elongated weakly interacting Bose gas, we observe and quantify the transition from the ideal gas to a quasicondensate regime throughout the dimensional crossover from a purely one-dimensional (1D) to an almost three-dimensional (3D) gas. We show that that the entire transition region and the dimensional crossover are described surprisingly well by the modified Yang-Yang model. Furthermore, we find that at low temperatures the linear density at the quasicondensate transition scales according to an interaction-driven scenario of a longitudinally uniform 1D Bose gas, whereas at high temperatures it scales according to the degeneracy-driven critical scenario of transverse condensation of a 3D ideal gas.
Keyword Gases
Bosons
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID ANR-08-BLAN-0165-03
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Physical Sciences Publications
 
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Created: Sun, 20 Mar 2011, 10:04:01 EST