Excited states of a dilute Bose-Einstein condensate in a harmonic trap

被引：56
|
作者：
Fetter, AL [1 ]
Rokhsar, D
机构：
[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
[2] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
来源：
PHYSICAL REVIEW A | 1998年 / 57卷 / 02期
关键词：
D O I：
10.1103/PhysRevA.57.1191
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The low-lying hydrodynamic normal modes of a dilute Bose-Einstein gas in an isotropic harmonic trap determine the corresponding Bogoliubov amplitudes. In the Thomas-Fermi limit, these nudes have large low-temperature occupation numbers and they permit an explicit construction of the dynamic structure function S(q,omega). The total noncondensate number N'(0) at zero temperature increases like R-6, where R is the condensate radius measured in units of the oscillator length. The lowest dipole modes are constructed explicitly in the Bogoliubov approximation. [S1050-2947(97)02811-4].
引用
收藏
页码：1191 / 1201
页数：11
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