ABC Formulation of Quantum Reactive Scattering

The ABC approach to quantum reactive scattering was originally derived to compute the cumulative reaction probability [26, 27]. It was then applied to the calculation of initial state selected and state-to-state reaction probabilities [28]. Thorough discussions of the theory can be found in these references. For completeness, a brief outline of tne formulae relevant for atom-diatom reactions is provided below. 

---

We have derived the ABC formulation of quantum reactive scattering theory, and applied it to the calculation of the initial state selected reaction probability. By exploiting the highly localized nature of forces in reactive scattering, the ABC formulation facilitates the direct calculation of detailed or averaged reaction probabilities while sampling only a finite region of space. 

---