Abstract
The damping of isoscalar giant quadrupole resonance in is studied using extended random-phase-approximation approaches derived from the time-dependent density-matrix theory. It is pointed out that the effects of ground-state correlations bring strong fragmentation of quadrupole strength even if the number of two-particle–two-hole configurations is strongly limited.
- Received 22 May 2022
- Accepted 5 July 2022
DOI:https://doi.org/10.1103/PhysRevC.106.L011302
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