Universal relations for ultracold reactive molecules

Whereas ultracold molecules provide scientists with a powerful apparatus to study a vast range of new quantum phenomena and novel quantum states, a key issue about reaction-induced losses must be addressed. However, taking into account quantum many-body effects in chemical reactions imposes a grand challenge to physicists and chemists. In this talk, I will discuss a number of universal relations between the two-body losses of reactive molecules and quantum many-body correlations, which are valid for arbitrary particle numbers, arbitrary temperatures, and arbitrary interaction strengths. Such universal relations unfold the central role of contacts in quantum chemical reactions and open the door to an unexplored area intertwining quantum chemistry, atomic, molecular and optical physics, and condensed matter physics.