旋量玻色-爱因斯坦凝聚体中Dirac单极的产生
Creation of Dirac monopoles in spinor Bose-Einstein condensates
摘要：
我们从理论上证明，使用标准的外部磁场，可以打印点状拓扑缺陷的自旋织构的稀释玻色-爱因斯坦凝聚体。凝聚序参量的对称性使得这种拓扑缺陷伴随着一个对应于磁介质的狄拉克弦的涡丝。凝聚体中的涡度与磁粒子的磁场一致，为狄拉克研究的磁粒子提供了一个理想的模拟。
英文摘要：
We demonstrate theoretically that using standard external magnetic fields, one can imprint point-like topological defects to the spin texture of a dilute Bose-Einstein condensate. Symmetries of the condensate order parameter render this topological defect to be accompanied with a vortex filament corresponding to the Dirac string of a magnetic monopole. The vorticity in the condensate coincides with the magnetic field of a magnetic monopole, providing an ideal analogue to the monopole studied by Dirac.
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