Vortex molecules in coherently coupled two-component Bose-Einstein condensates

被引：129

作者：

Kasamatsu, K ^{[1
]}

Tsubota, M

Ueda, M

机构：

[1] Osaka City Univ, Dept Phys, Sumiyoshi Ku, Osaka 5588585, Japan

[2] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.93.250406

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A vortex molecule is predicted in rotating two-component Bose-Einstein condensates whose internal hyperfine states are coupled coherently by an external field. A vortex in one component and one in the other are connected by a domain wall of the relative phase, constituting a "vortex molecule," which features a nonaxisymmetric (pseudo)spin texture with a pair of merons. The binding mechanism of the vortex molecule is discussed based on a generalized nonlinear sigma model and a variational ansatz. The anisotropy of vortex molecules is caused by the difference in the scattering lengths, yielding a distorted vortex-molecule lattice in fast rotating condensates.

引用

页数：4

共 26 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] Vortex states in a binary mixture of Bose-Einstein condensates [J].

Chui, S.T. ;

Ryzhov, V.N. ;

Tareyeva, E.E. .

Physical Review A - Atomic, Molecular, and Optical Physics, 2001, 63 (02) :023605-023601

[3]

Donnelly R. J., 1991, QUANTIZED VORTICES H, V2

[4] Split vortices in optically coupled Bose-Einstein condensates [J].

García-Ripoll, Juan J. ;

Pérez-García, Víctor M. ;

Sols, Fernando .

Physical Review A - Atomic, Molecular, and Optical Physics, 2002, 66 (02) :1-021602

[5] 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

[6] Measurements of relative phase in two-component Bose-Einstein condensates [J].

Hall, DS ;

Matthews, MR ;

Wieman, CE ;

Cornell, EA .

PHYSICAL REVIEW LETTERS, 1998, 81 (08) :1543-1546

[7] Dynamics of component separation in a binary mixture of Bose-Einstein condensates [J].

Hall, DS ;

Matthews, MR ;

Ensher, JR ;

Wieman, CE ;

Cornell, EA .

PHYSICAL REVIEW LETTERS, 1998, 81 (08) :1539-1542

[8] Binary mixtures of bose condensates of alkali atoms [J].

Ho, TL ;

Shenoy, VB .

PHYSICAL REVIEW LETTERS, 1996, 77 (16) :3276-3279

[9] Vortex nucleation in Bose-Einstein condensates in an oblate, purely magnetic potential -: art. no. 010405 [J].

Hodby, E ;

Hechenblaikner, G ;

Hopkins, SA ;

Maragò, OM ;

Foot, CJ .

PHYSICAL REVIEW LETTERS, 2002, 88 (01) :4

[10] Structure of vortices in two-component Bose-Einstein condensates [J].

Jezek, DM ;

Capuzzi, P ;

Cataldo, HM .

PHYSICAL REVIEW A, 2001, 64 (02) :4

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