Bose-Einstein condensation with magnetic dipole-dipole forces -: art. no. 051601

被引：297
|
作者：
Góral, K
Rzazewski, K
Pfau, T
机构：
[1] Polish Acad Sci, Ctr Theoret Phys, PL-02668 Warsaw, Poland
[2] Polish Acad Sci, Coll Sci, PL-02668 Warsaw, Poland
[3] Univ Konstanz, Fac Phys, D-78457 Constance, Germany
来源：
PHYSICAL REVIEW A | 2000年 / 61卷 / 05期
关键词：
D O I：
10.1103/PhysRevA.61.051601
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ground-state solutions in a dilute gas interacting via contact and magnetic dipole-dipole forces are investigated. To the best of our knowledge, it is the first example of studies of Bose-Einstein condensation in a system with realistic long-range interactions. We find that for the magnetic moment of e.g., chromium (6 mu(B)). and a typical value of the scattering length, all solutions are stable and only differ in size from condensates without long-range interactions. By lowering the value of the scattering length we find a region of unstable solutions. In the neighborhood of this region, the ground-state wave functions show internal structures that we believe have not been seen before in condensates. Finally, we find an analytic estimate for the characteristic length appearing in these solutions.
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