Kawaguchi Yuki, Saito Hiroki, Ueda Masahito
Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan.
Phys Rev Lett. 2006 Mar 3;96(8):080405. doi: 10.1103/PhysRevLett.96.080405.
The general properties of the order parameter for a dipolar spinor Bose-Einstein condensate are discussed based on symmetries of interactions. An initially spin-polarized dipolar condensate is shown to dynamically generate a nonsingular vortex via spin-orbit interactions--a phenomenon reminiscent of the Einstein-de Haas effect in ferromagnets.
基于相互作用的对称性,讨论了偶极自旋玻色 - 爱因斯坦凝聚体序参量的一般性质。研究表明,初始自旋极化的偶极凝聚体通过自旋 - 轨道相互作用动态产生一个非奇异涡旋——这一现象让人联想到铁磁体中的爱因斯坦 - 德哈斯效应。