Abstract
Using an l-insensitive quantum defect theory, we derive a set of universal properties, both spectral and scattering, that are shared by diatomic systems with an asymptotic van der Waals interaction and having a zero-energy bound or a quasibound state of angular momentum The dimer is studied as an example. Systems that are close to having a bound or a quasibound state at the threshold are also discussed.
- Received 21 July 2000
DOI:https://doi.org/10.1103/PhysRevA.62.050702
©2000 American Physical Society