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- W2076276988 abstract "We study the effect of interatomic correlations beyond the mean-field approximation on the ground-state properties of a trapped Bose gas interacting through a repulsive potential. To this end we employ a variational procedure that is based on the energy functional derived, in the local-density approximation, using the low-density expansion for the ground-state energy of the homogeneous gas. We also make analytic estimates of the corrections due to the higher-order terms in the expansion. We find that corrections are of the order of $1%.$ However, there is a qualitative change in the density profile for large N (number of atoms) due to presence of a logarithmic term in the expansion." @default.
- W2076276988 created "2016-06-24" @default.
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- W2076276988 date "2001-11-09" @default.
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- W2076276988 title "Ground-state properties of a trapped Bose gas beyond the mean-field approximation" @default.
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- W2076276988 doi "https://doi.org/10.1103/physreva.64.063604" @default.
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