Decoherence of Bose-Einstein condensates in traps at finite temperature

Details Decoherence of Bose-Einstein condensates in traps at finite temperature Decoherence of Bose-Einstein condensates in traps at finite temperature

1998-08-31

arxiv.org/abs/cond-mat/9808336v2

Physics

Condensed Matter

4 pages Revtex, revised version, to appear in Phys. Rev. Letters

Scientific paper

10.1103/PhysRevLett.81.5262

The phase diffusion of the order parameter of trapped Bose-Einstein condensates at temperatures large compared to the mean trap frequency is determined, which gives the fundamental limit of the line-width of an atom laser. In addition a prediction of the correlation time of the number fluctuations in the condensate is made and related to the phase diffusion via the fluctuation-dissipation relation.

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