Adiabatically changing the phase-space density of a trapped bose gas

P. W.H. Pinkse, A. Mosk, M. Weidemüller, M. W. Reynolds, T. W. Hijmans, J. T.M. Walraven

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73 Citations (Scopus)
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Abstract

We show that the degeneracy parameter of a trapped Bose gas can be changed adiabatically in a reversible way, both in the Boltzmann regime and in the degenerate Bose regime. We have performed measurements on spin-polarized atomic hydrogen in the Boltzmann regime, demonstrating reversible changes of the degeneracy parameter (phase-space density) by more than a factor of 2. This result is in good agreement with theory. By extending our theoretical analysis to the quantum degenerate regime we predict that, starting close enough to the Bose-Einstein phase transition, one can cross the transition by an adiabatic change of the trap shape.

Original languageEnglish
Pages (from-to)990-993
Number of pages4
JournalPhysical review letters
Volume78
Issue number6
DOIs
Publication statusPublished - 10 Feb 1997
Externally publishedYes

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