Feshbach resonances in a strictly two-dimensional atomic Bose gas

被引：4
|
作者：
Rajagopal, KK [1 ]
Vignolo, P [1 ]
Tosi, MP [1 ]
机构：
[1] Scuola Normale Super Pisa, Classe Sci, I-56126 Pisa, Italy
来源：
PHYSICA B-CONDENSED MATTER | 2004年 / 353卷 / 1-2期
关键词：
bose gases; low dimensional; density profiles;
D O I：
10.1016/j.physb.2004.09.001
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We discuss the atom-atom scattering problem across a Feshbach resonance in a two-dimensional dilute Bose gas at zero temperature, in the limit where the s-wave scattering length exceeds the width of the vertical confinement. We determine a tunable coupling-strength parameter and by controlling it we evaluate how the condensate wave function spreads out with increasing atom-atom repulsions. We also discuss the stability of the condensate in the magnetic-field regime where the coupling has become attractive. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：59 / 64
页数：6
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