Dimer-atom-atom recombination in the universal four-boson system

TL;DR

This paper investigates the four-boson system's recombination processes, revealing that dimer-atom-atom recombination rates are significantly higher than three-atom rates using exact four-particle equations.

Contribution

It provides a detailed theoretical analysis of four-boson recombination using the Alt, Grassberger, and Sandhas equations in momentum space, highlighting the dominance of dimer-atom-atom processes.

Findings

Dimer-atom-atom recombination rate exceeds three-atom recombination rate.

Exact four-particle equations are used for precise calculations.

Recombination processes are analyzed in the ultracold regime.

Abstract

The dimer-atom-atom recombination process in the system of four identical bosons with resonant interactions is studied. The description uses the exact Alt, Grassberger and Sandhas equations for the four-particle transition operators that are solved in the momentum-space framework. The dimer-dimer and atom-trimer channel contributions to the ultracold dimer-atom-atom recombination rate are calculated. The dimer-atom-atom recombination rate greatly exceeds the three-atom recombination rate.