Finite temperature excitations of Bose gases in anisotropic traps
arXiv:cond-mat/9811012 · doi:10.1103/PhysRevA.59.3816
Abstract
The mode frequencies of a weakly interacting Bose gas in a magnetic trap are studied as a function of the anisotropy of the trap. As in earlier works the generalized Hartree-Fock-Bogoliubov equations within the Popov approximation (HFB-Popov) are used for our calculations. The new feature of our work is the combined use of a mode expansion in a finite basis and a semiclassical approximation of the highly excited states. The results are applied to check the accuracy of the recently suggested equivalent zero-temperature condensate (EZC) approximation which involves a much simpler model.
arXiv comment7 pages revtex, 7 figures in postscript
References in corpus (12)
- Collective excitations of a trapped Bose-condensed gas
- Conserving and Gapless Approximations for an Inhomogeneous Bose Gas at Finite Temperatures
- Collective excitations of atomic Bose-Einstein condensates
- Condensate fraction and critical temperature of a trapped interacting Bose gas
- Finite temperature excitations of a trapped Bose gas
- Collective excitations of Bose-Einstein condensed gases at finite temperatures
- Low-energy elementary excitations of a trapped Bose-condensed gas
- Collective and single particle excitations of a trapped Bose gas
- Stability of Bose condensed atomic Li-7
- Hydrodynamic excitations of Bose condensates in anisotropic traps
- Mean Field Calculations of Bose-Einstein Condensation of 7Li Atoms In a Harmonic Trap
- Classical quasi-particle dynamics in trapped Bose condensates
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