Mermin-ho vortex in ferromagnetic spinor Bose-Einstein condensates.
Mermin-ho vortex in ferromagnetic spinor Bose-Einstein condensates.
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DOI：
10.1103/physrevlett.89.030401
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发表时间：
2002-03
影响因子：
8.6
通讯作者：
T. Mizushima;K. Machida;T. Kita
中科院分区：
文献类型：
--
作者：
T. Mizushima;K. Machida;T. Kita
证明了Mermin-Ho和Anderson-Toulouse无芯涡旋在铁磁F = 1旋量玻色-爱因斯坦凝聚体中在旋转下具有热力学稳定性。我们通过假设沿z轴的密度均匀，并比较其他竞争的非轴对称或奇异涡旋的能量，对Gross-Pitaevskii方程进行了广泛的计算。相位图由此建立在旋转驱动器与总磁化的平面上。它们的稳定性也通过计算基于Bogoliubov方程的集体模态来检验。
The Mermin-Ho and Anderson-Toulouse coreless vortices are demonstrated to be thermodynamically stable in ferromagnetic F = 1 spinor Bose-Einstein condensates under rotation. We have carried out extensive calculations of the Gross-Pitaevskii equations by assuming uniform density along the z axis and comparing the energies of other competing non-axis-symmetric or singular vortices. The phase diagram is thereby established in a plane of the rotation drive vs the total magnetization. Their stability is also checked by calculating collective modes based on the Bogoliubov equations.