Nonequilibrium effects of anisotropic compression applied to vortex lattices in Bose-Einstein condensates

被引：154

作者：

Engels, P ^{[1
]}

Coddington, I

Haljan, PC

Cornell, EA

机构：

[1] Univ Colorado, NIST, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

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

[3] Univ Colorado, NIST, Quantum Phys Div, Boulder, CO 80309 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.89.100403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the dynamics of large vortex lattices in a dilute-gas Bose-Einstein condensate. While undisturbed lattices have a regular hexagonal structure, large-amplitude quadrupolar shape oscillations of the condensate are shown to induce a wealth of nonequilibrium lattice dynamics. When exciting an m=-2 mode, we observe shifting of lattice planes, changes of lattice structure, and sheetlike structures in which individual vortices appear to have merged. Excitation of an m=+2 mode dissolves the regular lattice, leading to randomly arranged but still strictly parallel vortex lines.

引用

页数：4

共 23 条

[1] Formation and decay of vortex lattices in Bose-Einstein condensates at finite temperatures [J].

Abo-Shaeer, JR ;

Raman, C ;

Ketterle, W .

PHYSICAL REVIEW LETTERS, 2002, 88 (07) :4

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

Abo-Shaeer, JR ;

Raman, C ;

Vogels, JM ;

Ketterle, W .

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

[3] Watching dark solitons decay into vortex rings in a Bose-Einstein condensate [J].

Anderson, BP ;

Haljan, PC ;

Regal, CA ;

Feder, DL ;

Collins, LA ;

Clark, CW ;

Cornell, EA .

PHYSICAL REVIEW LETTERS, 2001, 86 (14) :2926-2929

[4] Vortex precession in Bose-Einstein condensates: Observations with filled and empty cores [J].

Anderson, BP ;

Haljan, PC ;

Wieman, CE ;

Cornell, EA .

PHYSICAL REVIEW LETTERS, 2000, 85 (14) :2857-2860

[5] Predicted signatures of rotating Bose-Einstein condensates [J].

Butts, DA ;

Rokhsar, DS .

NATURE, 1999, 397 (6717) :327-329

[6] Measurement of the angular momentum of a rotating Bose-Einstein condensate [J].

Chevy, F ;

Madison, KW ;

Dalibard, J .

PHYSICAL REVIEW LETTERS, 2000, 85 (11) :2223-2227

[7] Superfluid-to-solid crossover in a rotating Bose-Einstein condensate [J].

Feder, DL ;

Clark, CW .

PHYSICAL REVIEW LETTERS, 2001, 87 (19)

[8]

FISCHER UR, CONDMAT0111443

[9] Vortex bending and tightly packed vortex lattices in Bose-Einstein condensates -: art. no. 053611 [J].

García-Ripoll, JJ ;

Pérez-García, VM .

PHYSICAL REVIEW A, 2001, 64 (05) :7

[10] Driving Bose-Einstein-Condensate vorticity with a rotating normal cloud [J].

Haljan, PC ;

Coddington, I ;

Engels, P ;

Cornell, EA .

PHYSICAL REVIEW LETTERS, 2001, 87 (21) :210403-1

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