Stability and Collective Excitation of Two-Dimensional BECs with Two- and Three-Body Interactions in an Anharmonic Trap |
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| Authors: | YONG Wen-Mei WEI Xiu-Fang ZHOU Xiao-Yan XUE Ju-Kui |
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| Institution: | 1.College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China
;2.College of Science, Gansu Agricultural University, Lanzhou 730070, China
;3.Department of Physics, Lanzhou City University, Lanzhou 730070, China |
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| Abstract: | The stability and collective excitation of Bose-Einstein condensates with both two- and three-body interactions in a two-dimensional anharmonic trap (i.e., harmonicplus quartic trap) are investigated. By using the variational method, the influence of the three-body interaction and the anharmonicity on the stability are discussed in detail. It is found that the anharmonicity of the trap and the three-body interactionhave significant effect on the stability and collective excitations of the system. |
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| Keywords: | Bose Einstein condensates stability anharmonicity three-body interaction |
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