Abstract

By using the hybrid-TV model of the 4He + n + n three-body system, the binding energy and excited states of 6He are investigated. The binding energy 0.784 MeV is obtained for more realistic 4He-n interaction. It is discussed that the n-n correlations, which are fully taken into account in the ECM bases, are very important to reproduce the binding energy of 6He. The excited resonance states of the 6He system are also calculated by applying the complex scaling method. The first excited 2+ state obtained as a three-body resonance state is in good agreement with experiments. However, the excited 1 resonance states corresponding to the soft dipole excitation are not obtained at the low energy region.

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