We study the fluctuation of the number of particles in ideal Bose Einstein condensates, both within the canonical and the microcanonical ensemble. Employing the Mellin Barnes transformation, we derive simple expressions that link the canonical number of condensate particles, its fluctuation, and the
Particle fluctuations in nonuniform and trapped Bose gases
โ Scribed by V.I. Yukalov
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 108 KB
- Volume
- 6
- Category
- Article
- ISSN
- 1612-2011
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โฆ Synopsis
The problem of particle fluctuations in arbitrary nonuniform systems with Bose-Einstein condensate is considered. This includes the case of trapped Bose atoms. It is shown that the correct description of particle fluctuations for any nonuniform system of interacting atoms always results in thermodynamically normal fluctuations.
๐ SIMILAR VOLUMES
Fluctuations of the number of particles for the dilute interacting gas with Bose-Einstein condensate are considered. It is shown that in the Bogolubov theory these fluctuations are normal. The fluctuations of condensed as well as noncondensed particles are also normal both in canonical and grand can
We have studied a Bose-Einstein condensate of 87 Rb atoms under an oscillatory excitation. For a fixed frequency of excitation, we have explored how the values of amplitude and time of excitation must be combined in order to produce quantum turbulence in the condensate. Depending on the combination