The contact formalism describes short-range correlations, which play a crucial role in nuclear systems. Initially introduced for ultracold atoms, its generalization to the nuclear case was now validated by ab initio calculations.

中文翻译：

---

核子之间的接触

接触形式主义描述了短程相关性，这在核系统中起着至关重要的作用。最初是为超冷原子引入的，现在已通过从头算来验证了其对核案例的推广。