An improved method for reactive scatterings in ultracold conditions using the time-dependent method

Abstract

A new efficient method for considering the long-range effect of reactive scattering processes in ultracold conditions has been developed using the time-dependent quantum wave packet theory, where the initial wave packet could be placed at a position near the interaction region. This is in contrast to the previous method, where the initial wave packet has to be placed at a very far position. The new method reduces the numerical effort quite much. Several typical reactions, such as S(¹D) + H₂, D⁺ + H₂, and ⁷Li + ⁷Li₂ (v₀=1, j₀=0), in cold or ultracold conditions, are used to demonstrate the numerical efficiency of the new method.