Bose-Einstein condensation in a trap: The case of a dense condensate
- 1 August 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 56 (2) , 1438-1442
- https://doi.org/10.1103/physreva.56.1438
Abstract
We consider the Bose-Einstein condensation of atoms in a trap where the density of particles is so high that the low-density approach of Gross [J. Math. Phys. (N.Y.) 4, 195 (1963)] and Pitaevskii (V. L. Ginsburg and L. P. Pitaevskii, Zh. Éksp. Teor. Fiz. 34, 1240 (1958) [Sov. Phys. JETP 7, 1858 (1958)]) will not be applicable. For this purpose we use the slave boson representation which is valid for hard-core bosons at any density. This description leads to the same results as the Gross-Pitaevskii approach in the low-density limit, but for higher densities, it predicts the depletion of the condensate in the regions where the density of the atomic cloud is high.Keywords
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