Phys. Rev. Lett. 86, 945 - 949 (2001)Weakly Interacting Bose-Einstein Condensates under Rotation: Mean-Field versus Exact Solutions
A. D. Jackson1, G. M. Kavoulakis2 *, B. Mottelson2, and S. M. Reimann3 Received 18 April 2000 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. ©2001 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.86.945 * Present address: Royal Institute of Technology, Lindstedtsvägen 24, S-10044 Stockholm, Sweden. [ Abstract | Previous article | Next article | Issue 6 ] |
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