Stoof H T, Vliegen E, Al Khawaja U
Institute for Theoretical Physics, University of Utrecht, Princetonplein 5, 3584 CC Utrecht, The Netherlands.
Phys Rev Lett. 2001 Sep 17;87(12):120407. doi: 10.1103/PhysRevLett.87.120407. Epub 2001 Sep 3.
We show that even in three dimensions an antiferromagnetic spin-1 Bose-Einstein condensate, which can, for instance, be created with (23)Na atoms in an optical trap, has not only singular linelike vortex excitations, but also allows for singular pointlike topological excitations, i.e., monopoles similar to the 't Hooft-Polyakov monopoles. We discuss the static and dynamic properties of these monopoles.
我们证明，即使在三维空间中，一种反铁磁自旋为1的玻色-爱因斯坦凝聚体（例如，可以用处于光学阱中的（23）Na原子制备）不仅具有奇异的线状涡旋激发，而且还存在奇异的点状拓扑激发，即类似于't Hooft-Polyakov单极子的单极子。我们讨论了这些单极子的静态和动态特性。
