P波极限性对Efimov物理的启示
$P$-wave Efimov physics implications at unitarity
AI总结：
研究发现，在P波极限下，等质量费米三体系统表现出Efimov物理的残余普遍性，导致阈值和缩放定律的改变，并解释了三体重组损失率的实验结果。
摘要：
等质量费米三体系统，当两个不同的自旋分量接近单位极限时，若在粒子间引入P波相互作用，则会表现出一种普遍的范德华束缚或共振态，接近s波极限。我们的研究使用单一通道的Lennard-Jones相互作用，包含长程两体范德华势能。虽然已知在极限情况下不存在真正的Efimov效应，即不会产生无限多个束缚态，但我们展示了对于对称性L^Π=1^-，另一种普遍性现象的出现。这种普遍性是Efimov物理的残余，在P波极限下存在于该系统中，并导致阈值和缩放定律的改变。将我们的模型应用于杜、张和托马斯等人研究的三个锂原子系统，可以详细解释他们测量的三体重组损失率。
英文摘要：
Equal mass fermionic trimers with two different spin components near the unitary limit are shown to possess a universal van der Waals bound or resonance state near $s$-wave unitarity, when $p$-wave interactions are included between the particles with equal spin. Our treatment uses a single-channel Lennard-Jones interaction with long range two-body van der Waals potentials. While it is well-known that there is no true Efimov effect that would produce an infinite number of bound states in the unitary limit, we demonstrate that another type of universality emerges for the symmetry $L^Π=1^{-}$. The universality is a remnant of Efimov physics that exists in this system at $p$-wave unitarity, and it leads to modified threshold and scaling laws in that limit. Application of our model to the system of three lithium atoms studied experimentally by Du, Zhang, and Thomas [Phys. Rev. Lett. {\bf 102}, 250402 (2009)] yields a detailed interpretation of their measured three-body recombination loss rates.
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