发表机构
Universität Innsbruck; University of Otago（因斯布鲁克大学; 奥塔哥大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究为多组分超固体提出统一流体动力学理论，通过二元偶极凝聚体验证，揭示声速与弹性及超流分数的关联。
AI 中文摘要
双组分超固体可以表现出组分密度调制的同相或反相，分别对应密度超固体和自旋超固体。我们基于其破缺对称性和守恒定律，为多组分超固体的集体动力学构建了一个普适的流体动力学理论。我们将其与限制在无限管中的二元偶极凝聚体的微观计算结果进行基准对比，发现在密度和自旋超固体区域内，所有三个Goldstone分支的声速均定量一致。所得关系将集体模式测量与弹性系数和超流分数联系起来。
英文摘要
Two-component supersolids can exhibit in-phase or out-of-phase component density modulations, corresponding to density and spin supersolids, respectively. We formulate a general hydrodynamic theory for the collective dynamics of multicomponent supersolids, guided by their broken symmetries and conservation laws. We benchmark it against microscopic calculations for a binary dipolar condensate confined to an infinite tube, finding quantitative agreement for the sound speeds of all three Goldstone branches throughout the density- and spin-supersolid regions. The resulting relations link collective-mode measurements to elastic coefficients and superfluid fractions.
Comments8 pages, 4 figures
