One-dimensional model for the dynamics and expansion of elongated Bose-Einstein condensates

被引:44
作者
Massignan, P [1 ]
Modugno, M [1 ]
机构
[1] Univ Florence, Dipartimento Fis, INFM, LENS, I-50019 Sesto Fiorentino, Italy
来源
PHYSICAL REVIEW A | 2003年 / 67卷 / 02期
关键词
D O I
10.1103/PhysRevA.67.023614
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present a one-dimensional (1D) effective model for the evolution of a cigar-shaped Bose-Einstein condensate in time-dependent potentials whose radial component is harmonic. We apply this model to investigate the dynamics and expansion of condensates in 1D optical lattices, by comparing our predictions with recent experimental data and theoretical results. We also discuss negative-mass effects which could be probed during the expansion of a condensate moving in an optical lattice.
引用
收藏
页数:7
相关论文
共 26 条
[1]   Macroscopic quantum interference from atomic tunnel arrays [J].
Anderson, BP ;
Kasevich, MA .
SCIENCE, 1998, 282 (5394) :1686-1689
[2]  
ASHCROFT NW, 1976, SOLID SATE PHYSICS
[3]   Adiabaticity in nonlinear quantum dynamics: Bose-Einstein condensate in a time-varying box [J].
Band, YB ;
Malomed, B ;
Trippenbach, M .
PHYSICAL REVIEW A, 2002, 65 (03) :1-7
[4]   Superfluid and dissipative dynamics of a Bose-Einstein condensate in a periodic optical potential [J].
Burger, S ;
Cataliotti, FS ;
Fort, C ;
Minardi, F ;
Inguscio, M ;
Chiofalo, ML ;
Tosi, MP .
PHYSICAL REVIEW LETTERS, 2001, 86 (20) :4447-4450
[5]   Bose-Einstein condensates in time dependent traps [J].
Castin, Y ;
Dum, R .
PHYSICAL REVIEW LETTERS, 1996, 77 (27) :5315-5319
[6]   Josephson junction arrays with Bose-Einstein condensates [J].
Cataliotti, FS ;
Burger, S ;
Fort, C ;
Maddaloni, P ;
Minardi, F ;
Trombettoni, A ;
Smerzi, A ;
Inguscio, M .
SCIENCE, 2001, 293 (5531) :843-846
[7]  
CATALIOTTI FS, CONDMAT0207139
[8]   Ground state of trapped interacting Bose-Einstein condensates by an explicit imaginary-time algorithm [J].
Chiofalo, ML ;
Succi, S ;
Tosi, MP .
PHYSICAL REVIEW E, 2000, 62 (05) :7438-7444
[9]   Output from Bose condensates in tunnel arrays: the role of mean-field interactions and of transverse confinement [J].
Chiofalo, ML ;
Tosi, MP .
PHYSICS LETTERS A, 2000, 268 (4-6) :406-412
[10]   Probing the energy bands of a Bose-Einstein condensate in an optical lattice [J].
Chiofalo, ML ;
Succi, S ;
Tosi, MP .
PHYSICAL REVIEW A, 2001, 63 (06) :5