Abstract

In this work we investigate the theoretical aspects associated with the few-body universal properties of the weakly-bound two neutron halo in light nuclei. We emphasize that our study of wave functions can be used as inputs in calculations of reaction processes with light exotic nuclei. Starting from the Faddeev decomposition of the wave function for 3-body systems interacting through zero range forces, we calculate two-neutron halo states for large two-body scattering lengths coming closer to what is know today as Efimov's Physics. We report our findings for the wave function for a three-body n — n — C system, where we consider two neutrons as a halo around a compact core C. We focus our study on halo structure of Borromean systems like 11Li, 14Be, and 22C.

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