Green's function method to the ground state properties of a two-component Bose-Einstein condensate

被引：0

作者：

Liang, Chen ^{[1
]}

Wei, Kong ^{[1
]}

Ye, B. J. ^{[1
]}

Wen, H. M. ^{[1
]}

Zhou, X. Y. ^{[1
]}

Han, R. D. ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China

来源：

LOW TEMPERATURE PHYSICS | 2011年 / 37卷 / 07期

关键词：

SYSTEM;

D O I：

10.1063/1.3633685

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The elementary excitation spectrum of a two-component Bose-Einstein condensate is obtained by Green's function method. It is found to have two branches. In the long-wave limit, the two branches of the excitation spectrum are reduced to one phonon excitation and one single-particle excitation. With the obtained excitation spectrum and the Green's functions, the depletion of the condensate and the ground state energy have also been calculated in this paper. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3633685]

引用

页码：561 / 566

页数：6

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