论文标题
壳形玻璃纤维中的涡流 - 抗逆转录物物理学
Vortex-antivortex physics in shell-shaped Bose-Einstein condensates
论文作者
论文摘要
贝壳形的空心玻色子凝结物（BEC）表现出不同于其填充物的行为，由于它们在微重力设置中的潜在实现，最近引起了人们的注意。在这里，我们研究了这些空心结构的不同特征，这些空心结构来自涡流物理和旋转的存在。我们将重点放在涡旋 - 抗差对，作为由封闭地表拓扑施加的超流量流的约束所允许的最简单配置。在无限薄的壳贝克的二维极限中，我们表征了涡流 - 抗杀伤对之间的远距离吸引力，并找到了临界旋转速度，从而稳定该对，以稳定该对，以稳定在能量上放松自我净化。在三维情况下，我们将涡旋稳定性的边界与二维极限和填充球体BEC的边界进行对比，并评估临界旋转速度与壳厚度的函数。因此，我们证明了分析涡旋稳定提供了一种表征空心球体并将其与其填充对应物区分开的无损手段。
Shell-shaped hollow Bose-Einstein condensates (BECs) exhibit behavior distinct from their filled counterparts and have recently attracted attention due to their potential realization in microgravity settings. Here we study distinct features of these hollow structures stemming from vortex physics and the presence of rotation. We focus on a vortex-antivortex pair as the simplest configuration allowed by the constraints on superfluid flow imposed by the closed-surface topology. In the two-dimensional limit of an infinitesimally thin shell BEC, we characterize the long-range attraction between the vortex-antivortex pair and find the critical rotation speed that stabilizes the pair against energetically relaxing towards self-annihilation. In the three-dimensional case, we contrast the bounds on vortex stability with those in the two-dimensional limit and the filled sphere BEC, and evaluate the critical rotation speed as a function of shell thickness. We thus demonstrate that analyzing vortex stabilization provides a nondestructive means of characterizing a hollow sphere BEC and distinguishing it from its filled counterpart.
