Quantum Depletion Of Collapsing Bose-Einstein Condensates

Wuster, Sebastian, Dabrowska-Wuster, Beata J., Bradley, Ashton S., Davis, Matthew J., Blakie, P. Blair, Hope, Joseph J. and Savage, Craig M (2007) Quantum Depletion Of Collapsing Bose-Einstein Condensates. Physical Review A, 75 4: 043611-1-043611-8. doi:10.1103/PhysRevA.75.043611

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Author Wuster, Sebastian
Dabrowska-Wuster, Beata J.
Bradley, Ashton S.
Davis, Matthew J.
Blakie, P. Blair
Hope, Joseph J.
Savage, Craig M
Title Quantum Depletion Of Collapsing Bose-Einstein Condensates
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2007-04-17
Sub-type Article (original research)
DOI 10.1103/PhysRevA.75.043611
Open Access Status File (Publisher version)
Volume 75
Issue 4
Start page 043611-1
End page 043611-8
Total pages 8
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2008
Language eng
Abstract We perform the first numerical three-dimensional studies of quantum field effects in the Bosenova experiment on collapsing condensates by E. Donley et al. [Nature (London) 415, 39 (2002)] using the exact experimental geometry. In a stochastic truncated Wigner simulation of the collapse, the collapse times are larger than the experimentally measured values. We find that a finite temperature initial state leads to an increased creation rate of uncondensed atoms, but not to a reduction of the collapse time. A comparison of the time-dependent Hartree-Fock-Bogoliubov and Wigner methods for the more tractable spherical trap shows excellent agreement between the uncondensed populations. We conclude that the discrepancy between the experimental and theoretical values of the collapse time cannot be explained by Gaussian quantum fluctuations or finite temperature effects.
Keyword Optics
Q-Index Code C1
Q-Index Status Confirmed Code

 
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Created: Tue, 06 May 2008, 12:01:00 EST by Stephanie Golding on behalf of School of Mathematics & Physics