We apply a simplified description to weakly bound states and cold-collision continuum states of pairs of ground-state alkali-metal atoms, which complements the usual more elaborate coupled-channel treatment. It is based on a diabatic treatment of the transition region between the exchange-dominated interatomic distance range at small $r$ and the hyperfine-dominated range at large $r$ . The models contain the degenerate internal states approximation for H atoms as a special case.We apply a simplified description to weakly bound states and cold-collision continuum states of pairs of ground-state alkali-metal atoms, which complements the usual more elaborate coupled-channel treatment. It is based on a diabatic treatment of the transition region between the exchange-dominated interatomic distance range at small $r$ and the hyperfine-dominated range at large $r$. The models contain the degenerate internal states approximation for H atoms as a special case.

Physical Review AMay 1, 199817 citations

Ultra-cold Collisions

Harold J. Metcalf, P. van der Straten

Graduate texts in contemporary physicsJan 1, 19990 citations

r

and the hyperfine-dominated range at large

r

. The models contain the degenerate internal states approximation for H atoms as a special case.