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摘要翻译：
在零温度下，$S=1$旋量玻色凝聚体支持铁磁和极性相，它们结合了磁性和超流有序性。研究了二维有限温度和磁场下光阱中磁畴的形成。我们研究了自旋为1的体系的一般基态相图，重点研究了具有磁Ising序参量的相，并用数值方法确定了有限温度、超流和磁相变的性质。然后我们研究了三种不同的动力学模型：模型A（没有守恒量）、模型F（有守恒的第二声模）和Gross-Pitaevskii(GP)方程（有守恒的密度和磁化强度）。我们发现动态临界指数对于模型A和F是相同的($z=2$)，而对于GP是不同的在模型A和模型F中，外加磁化守恒得到的值
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英文标题：
《Dynamical models and the phase ordering kinetics of the s=1 spinor
condensate》
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作者：
Subroto Mukerjee, Cenke Xu, Joel E. Moore
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最新提交年份：
2007
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分类信息：
一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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一级分类：Physics 物理学
二级分类：Soft Condensed Matter 软凝聚态物质
分类描述：Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜，聚合物，液晶，玻璃，胶体，颗粒物质
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英文摘要：
The $s=1$ spinor Bose condensate at zero temperature supports ferromagnetic and polar phases that combine magnetic and superfluid ordering. We investigate the formation of magnetic domains at finite temperature and magnetic field in two dimensions in an optical trap. We study the general ground state phase diagram of a spin-1 system and focus on a phase that has a magnetic Ising order parameter and numerically determine the nature of the finite temperature superfluid and magnetic phase transitions. We then study three different dynamical models: model A, which has no conserved quantities, model F, which has a conserved second sound mode and the Gross-Pitaevskii (GP) equation which has a conserved density and magnetization. We find the dynamic critical exponent to be the same for models A and F ($z=2$) but different for GP ($z \approx 3$). Externally imposed magnetization conservation in models A and F yields the value $z \approx 3$, which demonstrates that the only conserved density relevant to domain formation is the magnetization density.
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PDF链接：
https://arxiv.org/pdf/704.344
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