Trapped Bose-einstein Condensates at Finite Temperature: a Two-gas Model

• Authors: R. Dodd , K. Burnett , M. Edwards , Ch. Clark
• Languages of publication: EN

Abstracts

EN

A simple picture describes the results of recent treatments of partially-condensed, dilute, trapped Bose gases at temperature T>0. The condensate wave function is nearly identical to that of a T=0 condensate with the same number of condensate atoms, N_{0}. The cloud of non-condensed atoms is described by the statistical mechanics of an ideal Bose gas in the combined potentials of the magnetic trap and the cloud-condensate interaction. We provide a physical motivation for this result, show how it emerges in the Hartree-Fock-Bogoliubov-Popov approximation, and explore some of its implications for future experiments.

Keywords

EN

03.75.Fi; 67.40.Db; 67.90.+z

Discipline

• 67.90.+z: Other topics in quantum fluids and solids (restricted to new topics in section 67)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1998
• Volume: 93
• Issue: 1
• Pages: 45-53

Dates

published

1998-01

Contributors

author

R. Dodd

• Institute for Physical Science and Technology University of Maryland at College Park, College Park, MD 20742, USA

author

K. Burnett

• Clarendon Laboratory, Department of Physics, University of Oxford Parks Road, Oxford OX1 3PU, UK

author

M. Edwards

• Department of Physics, Georgia Southern University, Statesboro, GA 30460, USA

author

Ch. Clark

• Electron and Optical Physics Division National Institute of Standards and Technology Gaithersburg, MD 20899, USA

Identifiers

DOI

10.12693/APhysPolA.93.45