On Multistep Bose-Einstein Condensation in Anisotropic Traps

Details On Multistep Bose-Einstein Condensation in Anisotropic Traps On Multistep Bose-Einstein Condensation in Anisotropic Traps

1999-06-18

arxiv.org/abs/quant-ph/9906071v2

J.Phys.A33:487-506,2000

Physics

Quantum Physics

26 pages, 7 figures, revised version, to appear in Jour. Phys. A

Scientific paper

10.1088/0305-4470/33/3/305

Multistep Bose-Einstein condensation of an ideal Bose gas in anisotropic harmonic atom traps is studied. In the presence of strong anisotropy realized by the different trap frequency in each direction, finite size effect dictates a series of dimensional crossovers into lower-dimensional excitations. Two-step condensation and the dynamical reduction of the effective dimension can appear in three separate steps. When the multistep behavior occurs, the occupation number of atoms excited in each dimension is shown to behave similarly as a function of the temperature.

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