On microscopic theory of spin-S Bose-Einstein condensate in a magnetic field

被引：6

作者：

Peletminskii, A. S.

Peletminskii, S. V. ^{[1
]}

Slyusarenko, Yu. V.

机构：

[1] Ctr Nat Sci, Kharkov Phys & Technol Inst, Akhiezer Inst Theoret Phys, UA-61108 Kharkov, Ukraine

[2] Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2007年 / 380卷

关键词：

Bose-Einstein condensation; spinor condensate; weakly interacting bose gas; quasiaverages; thermodynamics; excitation spectra;

D O I：

10.1016/j.physa.2007.02.107

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ground state and low-lying collective modes of Bose-Einstein condensate (BEC) of atoms with arbitrary spin in a magnetic field is studied using Bogoliubov's model for weakly interacting Bose gas. The equation for vectorial order parameter valid at temperature T -> 0 is derived and its specific solution is found. This solution corresponds to the formation of BEC of atoms with a definite spin projection onto direction of magnetic field. We study the thermodynamic stability of the found ground state and obtain the expressions for low-lying collective modes. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：202 / 210

页数：9

共 28 条

[1]

Akhiezer A. I., 1981, Methods of Statistical Physics

[2] Theory of a weakly nonideal Bose gas in a magnetic field [J].