Stability and dynamics across magnetic phases of vortex-bright type excitations in spinor Bose-Einstein condensates
Stability and dynamics across magnetic phases of vortex-bright type excitations in spinor Bose-Einstein condensates
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DOI：
10.1103/physreva.107.013313
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发表时间：
2021-09
影响因子：
2.9
通讯作者：
G. Katsimiga;S. Mistakidis;K. Mukherjee;P. Kevrekidis;P. Schmelcher
中科院分区：
文献类型：
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作者：
G. Katsimiga;S. Mistakidis;K. Mukherjee;P. Kevrekidis;P. Schmelcher
静态特性，即，研究了二维简谐约束自旋为1的玻色-爱因斯坦凝聚中涡旋亮型激发的存在性、稳定性以及猝灭诱导动力学.线性稳定的涡亮涡和亮涡亮解决方案出现在反铁磁和铁磁旋量气体的平方塞曼能量位移的变化。它们的变形在相关的过渡暴露和详细讨论也表明，紧急不稳定性可能导致图案的形成。空间伸长，进动运动和螺旋的非线性激发时，暴露于有限的温度和跨越不同的相边界，通过淬火的二次塞曼系数，被揭开。其中，由淬火引发的自旋混合过程导致随后配置的波形的变化。我们的研究结果揭示了图案形成和自旋混合过程之间的相互作用，可以在当代冷原子实验。
The static properties, i.e., existence and stability, as well as the quench-induced dynamics of vortex-bright type excitations in two-dimensional harmonically confined spin-1 Bose-Einstein condensates are investigated. Linearly stable vortex-bright-vortex and bright-vortex-bright solutions arise in both antiferromagnetic and ferromagnetic spinor gases upon quadratic Zeeman energy shift variations. Their deformations across the relevant transitions are exposed and discussed in detail evincing also that emergent instabilities can lead to pattern formation. Spatial elongations, precessional motion and spiraling of the nonlinear excitations when exposed to finite temperatures and upon crossing the distinct phase boundaries, via quenching of the quadratic Zeeman coefficient, are unveiled. Spin-mixing processes triggered by the quench lead, among others, to changes in the waveform of the ensuing configurations. Our findings reveal an interplay between pattern formation and spin-mixing processes being accessible in contemporary cold atom experiments.