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Effects of three-body interaction on collective excitation and stability of Bose-Einstein condensate.
- Source :
-
Chinese Physics B . Aug2009, Vol. 18 Issue 8, p3221-3225. 5p. - Publication Year :
- 2009
-
Abstract
- This paper investigates the collective excitation and stability of low-dimensional Bose-Einstein condensates with two- and three-body interactions by the variational analysis of the time-dependent Gross-Pitaevskii-Ginzburg equation. The spectrum of the low-energy excitation and the effective potential for the width of the condensate are obtained. The results show that: (i) the repulsive two-body interaction among atoms makes the frequency red-shifted for the internal excitation and the repulsive or attractive three-body interaction always makes it blue-shifted; (ii) the region for the existence of the stable bound states is obtained by identifying the critical value of the two- and three-body interactions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16741056
- Volume :
- 18
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Chinese Physics B
- Publication Type :
- Academic Journal
- Accession number :
- 43981206
- Full Text :
- https://doi.org/10.1088/1674-1056/18/8/021