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Weakly Interacting Bose-Einstein Condensates Under Rotation: Mean-field versus Exact Solutions | | A. D. Jackson
; G. M. Kavoulakis
; B. Mottelson
; S. M. Reimann
; | | Date: |
18 Apr 2000 | | Journal: | Phys. Rev. Lett., 86 (2001) 945 | | Subject: | cond-mat | | Affiliation: | Niels Bohr Institute, Denmark), G. M. Kavoulakis (NORDITA, Denmark), B. Mottelson (NORDITA, Denmark), and S. M. Reimann (Jyvaskyla, Finland | | Abstract: | We consider a weakly-interacting, harmonically-trapped Bose-Einstein condensed gas under rotation and investigate the connection between the energies obtained from mean-field calculations and from exact diagonalizations in a subspace of degenerate states. From the latter we derive an approximation scheme valid in the thermodynamic limit of many particles. Mean-field results are shown to emerge as the correct leading-order approximation to exact calculations in the same subspace. | | Source: | arXiv, cond-mat/0004309 | | Other source: | [GID 1011345] pmid11177981 | | Services: | Forum | Review | PDF | Favorites | |
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