Collective Excitations of Low Dimensional Trapped Bose-Condensed Gas

被引：2

作者：

Yun-Wen, Luo ^{[1
]}

Ji-Sheng, Chen ^{[2
]}

机构：

[1] Minna Normal Univ, Dept Phys, Zhangzhou 363000, Peoples R China

[2] Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2013年 / 60卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Bose-Einstein condensates (BEC); sound velocity; energy excitation spectrum; EINSTEIN CONDENSATE; PROPAGATION; SOUND;

D O I：

10.1088/0253-6102/60/6/07

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, we investigate excited characteristic of the weakly interacting quasi-one-dimensional (1D) and quasi-two-dimensional (2D) Bose-Einstein condensation (BEG) in harmonic potential trap. The energy spectrum and the analytical expression of the sound velocity are obtained and analyzed. Compared with 3-Dimensional homogeneous Bose-condensed gas occasion, the sound velocity of 2D Bose-Einstein condensation in harmonic potential trap is smaller.

引用

页码：673 / 676

页数：4

共 20 条

[1] OBSERVATION OF BOSE-EINSTEIN CONDENSATION IN A DILUTE ATOMIC VAPOR [J].

ANDERSON, MH ;

ENSHER, JR ;

MATTHEWS, MR ;

WIEMAN, CE ;

CORNELL, EA .

SCIENCE, 1995, 269 (5221) :198-201

[2] Propagation of sound in a Bose-Einstein condensate [J].

Andrews, MR ;

Kurn, DM ;

Miesner, HJ ;

Durfee, DS ;

Townsend, CG ;

Inouye, S ;

Ketterle, W .

PHYSICAL REVIEW LETTERS, 1997, 79 (04) :553-556

[3]

Bogoliubov N., 1947, J. Phys., V11, P23

[4] Waveguide for Bose-Einstein condensates [J].

Bongs, K ;

Burger, S ;

Dettmer, S ;

Hellweg, D ;

Arlt, J ;

Ertmer, W ;

Sengstock, K .

PHYSICAL REVIEW A, 2001, 63 (03) :1-4

[5] TRANSITION TO DISSIPATION IN A MODEL OF SUPERFLOW [J].

FRISCH, T ;

POMEAU, Y ;

RICA, S .

PHYSICAL REVIEW LETTERS, 1992, 69 (11) :1644-1647

[6] Realization of Bose-Einstein condensates in lower dimensions -: art. no. 130402 [J].

Görlitz, A ;

Vogels, JM ;

Leanhardt, AE ;

Raman, C ;

Gustavson, TL ;

Abo-Shaeer, JR ;

Chikkatur, AP ;

Gupta, S ;

Inouye, S ;

Rosenband, T ;

Ketterle, W .

PHYSICAL REVIEW LETTERS, 2001, 87 (13) :130402/1-130402/4

[7] Expansion of Bose-Einstein condensates confined in quasi-one-dimensional or quasi-two-dimensional traps [J].

Kamchatnov, AM .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2004, 98 (05) :908-917

[8] Nonlinear waves in a cylindrical Bose-Einstein condensate [J].

Komineas, S ;

Papanicolaou, N .

PHYSICAL REVIEW A, 2003, 67 (02) :11

[9] EIGENVALUES AND EIGENFUNCTIONS OF A BOSE SYSTEM OF HARD SPHERES AND ITS LOW-TEMPERATURE PROPERTIES [J].

LEE, TD ;

HUANG, K ;

YANG, CN .

PHYSICAL REVIEW, 1957, 106 (06) :1135-1145

[10] Quantum and Thermal Effects of Dark Solitons in a One-Dimensional Bose Gas [J].

Martin, A. D. ;

Ruostekoski, J. .

PHYSICAL REVIEW LETTERS, 2010, 104 (19)

← 1 2 →