论文标题
超声分子之间的粘性碰撞中对称性破裂
Symmetry breaking in sticky collisions between ultracold molecules
论文作者
论文摘要
超低分子经历了“粘性碰撞”，即使对于化学无反应性分子也会损失。通过数量级，可以通过相互作用来增强粘性时间，从而导致核自旋或总角动量的持续性。我们提出了基于碰撞复合物的经典模拟这种对称性相互作用所需强度的定量理论。我们发现静态电场小至$ 10 $ 〜v/cm可能导致角动量的不保存，而我们发现在碰撞期间核旋是保守的。我们还计算由于自发发射和黑体辐射的吸收引起的碰撞复合物的丧失，发现这很慢。
Ultracold molecules undergo "sticky collisions" that result in loss even for chemically nonreactive molecules. Sticking times can be enhanced by orders of magnitude by interactions that lead to non-conservation of nuclear spin or total angular momentum. We present a quantitative theory of the required strength of such symmetry-breaking interactions based on classical simulation of collision complexes. We find static electric fields as small as $10$~V/cm can lead to non-conservation of angular momentum, while we find nuclear spin is conserved during collisions. We also compute loss of collision complexes due to spontaneous emission and absorption of black-body radiation, which are found to be slow.
