Experimental studies of equilibrium vortex properties in a Bose-condensed gas

被引：86

作者：

Coddington, I ^{[1
]}

Haljan, PC

Engels, P

Schweikhard, V

Tung, S

Cornell, EA

机构：

[1] Univ Colorado, Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[3] Natl Inst Stand & Technol, Quantum Phys Div, Boulder, CO USA

来源：

PHYSICAL REVIEW A | 2004年 / 70卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevA.70.063607

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We characterize several equilibrium vortex effects in a rotating Bose-Einstein condensate. Specifically we attempt precision measurements of the vortex-lattice spacing and vortex-core size over a range of condensate densities and rotation rates. These measurements are supplemented by numerical simulations, and both experimental and numerical data are compared to theory. Finally, we study the effect of the centrifugal weakening of the trapping spring constants on the critical temperature for quantum degeneracy and the effects of finite temperature on vortex contrast.

引用

页码：063607 / 1

页数：11

共 37 条

[1] Observation of vortex lattices in Bose-Einstein condensates [J].

Abo-Shaeer, JR ;

Raman, C ;

Vogels, JM ;

Ketterle, W .

SCIENCE, 2001, 292 (5516) :476-479

[2]

Anglin J. R., CONDMAT0210063

[3] Vortex core structure and global properties of rapidly rotating Bose-Einstein condensates [J].

Baym, G ;

Pethick, CJ .

PHYSICAL REVIEW A, 2004, 69 (04) :043619-1

[4] Tkachenko modes of vortex lattices in rapidly rotating Bose-Einstein condensates [J].

Baym, G .

PHYSICAL REVIEW LETTERS, 2003, 91 (11)

[5] Quadrupole oscillation of a single-vortex Bose-Einstein condensate: Evidence for Kelvin modes [J].

Bretin, V ;

Rosenbusch, P ;

Chevy, F ;

Shlyapnikov, GV ;

Dalibard, J .

PHYSICAL REVIEW LETTERS, 2003, 90 (10) :4

[6] Bose-Einstein condensates in time dependent traps [J].

Castin, Y ;

Dum, R .

PHYSICAL REVIEW LETTERS, 1996, 77 (27) :5315-5319

[7] Kelvin modes of a fast rotating Bose-Einstein condensate [J].

Chevy, F ;

Stringari, S .

PHYSICAL REVIEW A, 2003, 68 (05) :7

[8] Excitation spectrum of vortex lattices in rotating Bose-Einstein condensates [J].

Choi, S ;

Baksmaty, LO ;

Woo, SJ ;

Bigelow, NP .

PHYSICAL REVIEW A, 2003, 68 (03) :4

[9] Observation of Tkachenko oscillations in rapidly rotating Bose-Einstein condensates [J].

Coddington, I ;

Engels, P ;

Schweikhard, V ;

Cornell, EA .

PHYSICAL REVIEW LETTERS, 2003, 91 (10) :1004021-1004024

[10] Vortex lattices in the lowest Landau level for confined Bose-Einstein condensates [J].

Cooper, NR ;

Komineas, S ;

Read, N .

PHYSICAL REVIEW A, 2004, 70 (03) :033604-1

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