一个孤立粒子衰变为Dirac π组态
Decay of an isolated monopole into a Dirac monopole configuration
摘要：
我们数值研究孤立的单极子的详细结构和衰变动力学的条件类似于他们最近的实验发现。我们发现自旋为1的玻色-爱因斯坦凝聚体的极相中的量子核包含一个小的半量子涡环。在电子的产生之后，我们观察到一个动态的量子相变，它破坏了极性相。引人注目的是，由此产生的铁磁序参量在其合成磁场中呈现出狄拉克磁。
英文摘要：
We study numerically the detailed structure and decay dynamics of isolated monopoles in conditions similar to those of their recent experimental discovery. We find that the core of a monopole in the polar phase of a spin-1 Bose-Einstein condensate contains a small half-quantum vortex ring. Well after the creation of the monopole, we observe a dynamical quantum phase transition that destroys the polar phase. Strikingly, the resulting ferromagnetic order parameter exhibits a Dirac monopole in its synthetic magnetic field.
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