Exciting, Cooling And Vortex Trapping In A Bose-Condensed Gas

Details Exciting, Cooling And Vortex Trapping In A Bose-Condensed Gas Exciting, Cooling And Vortex Trapping In A Bose-Condensed Gas

1998-08-13

arxiv.org/abs/cond-mat/9808148v2

Physics

Condensed Matter

9 pages, 7 figures. It's worth the wait! To be published in Physical Review A, 1st February 1999

Scientific paper

10.1103/PhysRevA.59.2085

A straight forward numerical technique, based on the Gross-Pitaevskii equation, is used to generate a self-consistent description of thermally-excited states of a dilute boson gas. The process of evaporative cooling is then modelled by following the time evolution of the system using the same equation. It is shown that the subsequent rethermalisation of the thermally-excited state produces a cooler coherent condensate. Other results presented show that trapping vortex states with the ground state may be possible in a two-dimensional experimental environment.

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