Local versus nonlocal $αα$ interactions in $3α$ description of $^{12}$C

Suzuki, Y.; Matsumura, H.; Orabi, M.; Fujiwara, Y.; Descouvemont, P.; Theeten, M.; Baye, D.

Local versus nonlocal $αα$ interactions in $3α$ description of $^{12}$C

Authors

Description

Local $αα$ potentials fail to describe $^{12}$C as a $3α$ system. Nonlocal $αα$ potentials that renormalize the energy-dependent kernel of the resonating group method allow interpreting simultaneously the ground state and $0^+_2$ resonance of $^{12}$C as $3α$ states. A comparison with fully microscopic calculations provides a measure of the importance of three-cluster exchanges in those states.
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