  We construct a 1D toy model to describe the structural properties of
Borromean nuclei at the continuum threshold. The system is composed by two
valence neutrons that are bound thanks to a residual interaction. Different
discretization procedures are used (harmonic oscillator, transformed harmonic
oscillator, rigid wallbox). The resulting energies and wave functions, as well
as transition intensities and resonances are compared within the different
discretization techniques.
