Simulations of Bose fields at finite temperature

Davis, M. J., Morgan, S. A. and Burnett, K. (2001) Simulations of Bose fields at finite temperature. Physical Review Letters, 87 16: 160402-1-160402-4. doi:10.1103/PhysRevLett.87.160402

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Author Davis, M. J.
Morgan, S. A.
Burnett, K.
Title Simulations of Bose fields at finite temperature
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2001-09-01
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.87.160402
Open Access Status File (Publisher version)
Volume 87
Issue 16
Start page 160402-1
End page 160402-4
Total pages 4
Place of publication College Pk
Publisher American Physical Soc
Language eng
Subject 240402 Quantum Optics and Lasers
Abstract We introduce a time-dependent projected Gross-Pitaevskii equation to describe a partially condensed homogeneous Bose gas, and find that this equation will evolve randomized initial wave functions to equilibrium. We compare our numerical data to the predictions of a gapless, second order theory of Bose-Einstein condensation [S. A. Morgan, J. Phys. B 33, 3847 (2000)], and find that we can determine a temperature when the theory is valid. As the Gross-Pitaevskii equation is nonperturbative, we expect that it can describe the correct thermal behavior of a Bose gas as long as all relevant modes are highly occupied. Our method could be applied to other boson fields.
Keyword Physics, Multidisciplinary
Nonlinear Schrodinger-equation
Trapped Neutral Atoms
Einstein Condensation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Physical Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 150 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 02 Apr 2007, 14:52:08 EST by Kaye Eldridge on behalf of School of Mathematics & Physics