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Roles of Collective Excitations in the Anomalous Fluctuations of One-Dimensional Interacting Bose-Condensed Gases |
LIU Shu-Juan;XIONG Hong-Wei;XU Zhi-Jun;HUANG Lin |
Department of Applied Physics, Zhejiang University of Technology, Hangzhou 310032 |
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Cite this article: |
LIU Shu-Juan, XIONG Hong-Wei, XU Zhi-Jun et al 2003 Chin. Phys. Lett. 20 1672-1673 |
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Abstract 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 <δ2N0> ~ N10/3/( ln N)2 with N being the total number of particles.
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Keywords:
03.75.Fi
05.30.Jp
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Published: 01 October 2003
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