Superfluid-to-solid crossover in a rotating Bose-Einstein condensate

被引:40
作者
Feder, DL [1 ]
Clark, CW
机构
[1] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA
[2] NIST, Div Electron & Opt Phys, Gaithersburg, MD 20899 USA
关键词
D O I
10.1103/PhysRevLett.87.190401
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The properties of a rotating Bose-Einstein condensate confined in a prolate cylindrically symmetric trap are explored both analytically and numerically. As the rotation frequency increases, an ever greater number of vortices are energetically favored. Though the cloud anisotropy and moment of inertia approach those of a classical fluid at high frequencies, the observed vortex density is consistently lower than the solid-body estimate. Furthermore, the vortices are found to arrange themselves in highly regular triangular arrays, with Little distortion even near the condensate surface. These results are shown to be a direct consequence of the inhomogeneous confining potential.
引用
收藏
页数:4
相关论文
共 22 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 PATTERNS AND ENERGIES IN A ROTATING SUPERFLUID [J].
CAMPBELL, LJ ;
ZIFF, RM .
PHYSICAL REVIEW B, 1979, 20 (05) :1886-1902
[3]   Bose-Einstein condensates with vortices in rotating traps [J].
Castin, Y ;
Dum, R .
EUROPEAN PHYSICAL JOURNAL D, 1999, 7 (03) :399-412
[4]   Quantum phases of vortices in rotating Bose-Einstein condensates [J].
Cooper, NR ;
Wilkin, NK ;
Gunn, JMF .
PHYSICAL REVIEW LETTERS, 2001, 87 (12) :120405/1-120405/4
[5]  
Donnelly R. J., 1991, QUANTIZED VORTICES H, V2
[6]   Vortices in a trapped dilute Bose-Einstein condensate [J].
Fetter, AL ;
Svidzinsky, AA .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (12) :R135-R194
[7]   STRUCTURE OF A QUANTIZED VORTEX IN BOSON SYSTEMS [J].
GROSS, EP .
NUOVO CIMENTO, 1961, 20 (03) :454-+
[8]  
HALJAN PC, CONDMAT0106362
[9]   THE ROTATION OF LIQUID HELIUM-II .2. THE THEORY OF MUTUAL FRICTION IN UNIFORMLY ROTATING HELIUM-II [J].
HALL, HE ;
VINEN, WF .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1956, 238 (1213) :215-234
[10]   Bose-Einstein condensates with large number of vortices [J].
Ho, TL .
PHYSICAL REVIEW LETTERS, 2001, 87 (06) :60403-1