# Evolution of a Bose-condensed gas under variations of the confining potential.

@article{Kagan1996EvolutionOA, title={Evolution of a Bose-condensed gas under variations of the confining potential.}, author={Kagan and Surkov and Shlyapnikov}, journal={Physical review. A, Atomic, molecular, and optical physics}, year={1996}, volume={54 3}, pages={ R1753-R1756 } }

We discuss the dynamic properties of a trapped Bose-condensed gas under variations of the confining field and find analytical scaling solutions for the evolving coherent state ~condensate!. We further discuss the characteristic features and the depletion of this coherent state. @S1050-2947~96!50209-X# PACS number~s!: 03.75.Fi, 34.20.Cf The recent successful experiments on Bose-Einstein condensation ~BEC! in trapped ultracold alkali atom gases @1‐3# open a unique possibility to investigate…

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## References

Superconductivity Of Metals And Alloys

- Physics
- 1966

Drawn from the author's introductory course at the University of Orsay, Superconductivity of Metals and Alloys is intended to explain the basic knowledge of superconductivity for both…