Phase diagram of solitons in the polar phase of a spin-1 Bose-Einstein condensate
Phase diagram of solitons in the polar phase of a spin-1 Bose-Einstein condensate
复制标题
自旋 1 玻色-爱因斯坦凝聚极相中孤子的相图
DOI：
10.1103/physrevresearch.2.033506
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发表时间：
2020
影响因子：
4.2
通讯作者：
Takeuchi Hiromitsu
中科院分区：
文献类型：
--
作者：
Liu I-Kang;Gou Shih-Chuan;Takeuchi Hiromitsu
从理论上研究了零温下存在二次塞曼效应时自旋为1的玻色-爱因斯坦凝聚体极性相中的定态孤子的结构。通过在极性相位的定义范围内寻找孤子能量最小的状态，绘制出了这种孤子的相图。根据核心中的粒子和自旋密度，状态被分类为正常、反铁磁、破轴对称和铁磁相。在平均场理论下，证明了不同孤子之间相变的顺序以及相关连续相变的临界行为。
We theoretically study the structure of a stationary soliton in the polar phase of spin-1 Bose–Einstein condensate in the presence of quadratic Zeeman effect at zero temperature. The phase diagram of such solitons is mapped out by finding the states of minimal soliton energy in the defining range of polar phase. The states are assorted into normal, antiferromagnetic, broken-axisymmetry, and ferromagnetic phases according to the particle and spin densities in the core. The order of phase transitions between different solitons and the critical behavior of relevant continuous transitions are proved within the mean-field theory.