On Multistep Bose-Einstein Condensation in Anisotropic Traps
Abstract
Description
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.
26 pages, 7 figures, revised version, to appear in Jour. Phys. A
26 pages, 7 figures, revised version, to appear in Jour. Phys. A