发表机构
Ioffe Institute（约费研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对稠密铯蒸气在强自旋交换下异常排列信号，提出唯象模型，将各向异性窄共振、磁滞和双稳态归因于取向与排列双向耦合的集体模式，该模式作为储库实现排列的有效守恒。
AI 中文摘要
我们提出了一个唯象模型，用于描述在零磁场附近、线偏振泵浦和快速自旋交换条件下，稠密铯蒸气中异常排列信号的现象。尽管秩为2的角动量不存在守恒定律，我们近期的实验揭示了各向异性的窄共振、磁滞现象和双稳态。我们将这些效应归因于一个拉伸态形成的集体模式，在该模式中取向和排列双向耦合。这种模式充当储库，在快速自旋交换下仍能保持排列的基本特性。
英文摘要
We present a phenomenological model of anomalous alignment signals in dense cesium vapor under linearly polarized pumping and fast spin exchange near zero magnetic field. Despite the absence of a conservation law for rank-2 angular momentum, our recent experiments reveal anisotropic narrow resonances, hysteresis, and bistability. We attribute these effects to a stretched state forming a collective mode in which orientation and alignment are bidirectionally coupled. This mode acts as a reservoir, preserving the essential properties of alignment despite rapid spin exchange.
Comments13 pages, 6 figures
