Ab initio NCSM/RGM for three-body cluster systems and application to 4He+n+n
Abstract
We introduce an extension of the ab initio no-core shell model/resonating group method (NCSM/RGM) in order to describe three-body cluster states. We present results for the 6He ground state within a 4He+n+n cluster basis as well as first results for the phase shifts of different channels of the 4He+n+n system which provide information about low-lying resonances of this nucleus.
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