Collective spin tunneling in spinor Bose-Einstein condensates

被引：0
作者：
H. Kuratsuji
R. Botet
机构：
[1] Ritsumeikan University-BKC,Department of Physics
[2] Bâtiment 510,Laboratoire de Physique des Solides
[3] CNRS UMR8502 / Université Paris-Sud,undefined
来源：
The European Physical Journal D | 2008年 / 49卷
关键词：
03.75.Mn Multicomponent condensates; spinor condensates;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We investigate a novel aspect of rotational tunneling of the macroscopic spin for multicomponent spinor Bose-Einstein condensate (BEC). The Lagrangian is deduced from the multi-component BEC system formalism, and is written in terms of spin coherent states. From the effective Hamiltonian for the collective spin, the tunneling rate is obtained through a functional integral of the spin variable. It is pointed out that the cooperative effect between the Zeeman energy and the anisotropic nature of the spin-dependent inter-atomic interaction plays a key role for occurrence of collective spin tunneling.
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页码：111 / 116
页数：5
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