Bose-Einstein condensation from a rotating thermal cloud: Vortex nucleation and lattice formation

Bradley, A. S., Gardiner, C. W. and Davis, M. J. (2008) Bose-Einstein condensation from a rotating thermal cloud: Vortex nucleation and lattice formation. Physical Review A, 77 3: . doi:10.1103/PhysRevA.77.033616

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Author Bradley, A. S.
Gardiner, C. W.
Davis, M. J.
Title Bose-Einstein condensation from a rotating thermal cloud: Vortex nucleation and lattice formation
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2008-03-14
Year available 2008
Sub-type Article (original research)
DOI 10.1103/PhysRevA.77.033616
Open Access Status File (Publisher version)
Volume 77
Issue 3
Total pages 14
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Abstract We develop a stochastic Gross-Pitaveskii theory suitable for the study of Bose-Einstein condensation in a rotating dilute Bose gas. The theory is used to model the dynamical and equilibrium properties of a rapidly rotating Bose gas quenched through the critical point for condensation, as in the experiment of Haljan et al. [Phys. Rev. Lett. 87, 210403 (2001)]. In contrast to stirring a vortex-free condensate, where topological constraints require that vortices enter from the edge of the condensate, we find that phase defects in the initial noncondensed cloud are trapped en masse in the emerging condensate. Bose-stimulated condensate growth proceeds into a disordered vortex configuration. At sufficiently low temperature the vortices then order into a regular Abrikosov lattice in thermal equilibrium with the rotating cloud. We calculate the effect of thermal fluctuations on vortex ordering in the final gas at different temperatures, and find that the BEC transition is accompanied by lattice melting associated with diminishing long-range correlations between vortices across the system.
Keyword Bose-Einstein condensation
Condensation
Lattice dynamics
Melting
Thermal properties
Vortices
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article #033616

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Mathematics and Physics
 
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Created: Thu, 09 Apr 2009, 21:16:56 EST by Stephanie Golding on behalf of ARC Centre of Excellence for Quantum-Atom Optics