Abstract
We study the equal-mass charge-neutral four-body system in the adiabatic hyperspherical framework. The lowest few adiabatic potentials are calculated for zero orbital angular momentum, positive parity, and charge conjugation symmetries. Propagating the matrix, the low-energy -wave scattering lengths of the singlet-singlet and triplet-triplet spin configurations are calculated. Last, we calculate the matrix for energies above the ionic threshold to estimate the transition rates between the single ionic fragmentation channel and the lowest few dimer-dimer fragmentation channels.
- Received 22 September 2014
DOI:https://doi.org/10.1103/PhysRevA.91.012512
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