Excitations of a Bose-condensed gas in anisotropic traps

被引：31

作者：

Hutchinson, DAW ^{[1
]}

Zaremba, E ^{[1
]}

机构：

[1] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

来源：

PHYSICAL REVIEW A | 1998年 / 57卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.57.1280

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the zero-temperature collective excitations of a Bose-condensed atomic gas in anisotropic parabolic traps. The condensate density is determined by solving the Gross-Pitaevskii (GP) equation using a spherical harmonic expansion, The GP eigenfunctions are then used to solve the Bogoliubov equations to obtain the collective excitation frequencies and mode densities. The frequencies of the various modes, classified by their parity and the axial angular momentum quantum number, m. are mapped out as a function of the axial anisotropy. Specific emphasis is placed upon the evolution of these modes from the modes in the Limit of an isotropic trap. [S1050-2947(98)07202-3].

引用

页码：1280 / 1285

页数：6

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