Collective Excitations of Low Dimensional Trapped Bose-Condensed Gas |
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| Authors: | LUO Yun-Wen CHEN Ji-Sheng |
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| Institution: | 1. Department of Physics, Minnan Normal University, Zhangzhou 363000, China;
2. Department of Physics, Central China Normal University, Wuhan 430079, China |
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| Abstract: | In this paper, we investigate excited characteristic of the weakly interacting quasi-one-dimensional (1D) and quasi-two-dimensional (2D) Bose-Einstein condensation (BEC) in harmonic potential trap. The energy spectrum and the analytical expression of the sound velocity are obtained and analyzed. Compared with 3-Dimensional homogeneous Bose-condensed gas occasion, the sound velocity of 2D Bose-Einstein condensation in harmonic potential trap is smaller. |
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| Keywords: | Bose-Einstein condensates（BEC) sound velocity energy excitation spectrum |
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