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11.
Roles of Collective Excitations in the Anomalous Fluctuations of One-Dimensional Interacting Bose-Condensed Gases 
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下载免费PDF全文 The particle-number fluctuations due to collective excitations are calculated for a one-dimensional interacting Bose-condensed gas confined in a harmonic potential. By using the Thomas-Fermi approximation, the behaviour of the anomalous fluctuations is found to be (δ^2N0)～ N^10/3/ (ln N)^2 with N being the total number of particles. 相似文献