Bose-Einstein Condensates with Two- and Three-Body Interactions in an Anharmonic Trap at Finite Temperature

被引：13
|
作者：
Li Hao-Cai [1 ]
Chen Hai-Jun [1 ]
Xue Ju-Kui [1 ]
机构：
[1] NW Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2010年 / 27卷 / 03期
基金：
中国国家自然科学基金;
关键词：
COLLECTIVE EXCITATIONS; GAS; THERMODYNAMICS;
D O I：
10.1088/0256-307X/27/3/030304
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The transition temperature, the depletion of the condensate atoms and the collective excitations of a Bose-Einstein condensation (BEC) with two- and three-body interactions in an anharmonic trap at finite temperature are studied in detail. By using the Popov version of the Hartree-Fock-Bogoliubov (HFB) approximation, an extended self-consistent model describing BEC with both two- and three-body interactions in a distorted harmonic potential at finite temperature is obtained and solved numerically. The results show that the transition temperature, the condensed atom number and the collective excitations are modified dramatically by the atomic three-body interactions and the distortion of the harmonic trap.
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页数：4
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