hyperradial

For the case of zero-range, regularized pseudo-potential interactions, we find that the system is nearly separable in hyperspherical coordinates and that, away from a set of narrow avoided crossings, the full energy eigenspectrum as a function of the 2D s-wave scattering length is well described by ignoring coupling between adiabatic hyperradial potentials.

2015, Seth T. Rittenhouse, Andrew Wray, B. L. Johnson, “Hyperspherical approach to the three-bosons problem in 2D with a magnetic field”, in arXiv