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. 2007 Mar 16;98(11):110406. doi: 10.1103/PhysRevLett.98.110406. Epub 2007 Mar 14.
Weak dipolar effects in atomic Bose-Einstein condensates (BECs) have recently been predicted to develop spin textures. However, observation of the spin textures requires us to decrease the magnetic field down to approximately 10 microG for spin-1 alkali BECs, so that they are not washed out by the Zeeman effect. We present a scheme to observe the magnetic dipole-dipole interaction in alkali BECs under a realistic magnetic field of approximately 100 mG. Our scheme enables us to extract genuine dipolar effects and should apply also to (52)Cr BECs.
最近有预测表明，原子玻色-爱因斯坦凝聚体（BECs）中的弱偶极效应会产生自旋纹理。然而，要观察到自旋纹理，对于自旋为1的碱金属BECs，我们需要将磁场降低到大约10微高斯，这样它们才不会被塞曼效应掩盖。我们提出了一种方案，用于在大约100毫高斯的实际磁场下观察碱金属BECs中的磁偶极-偶极相互作用。我们的方案能够让我们提取出真正的偶极效应，并且应该也适用于（52）Cr BECs。
