Extended random-phase-approximation study of the fragmentation of the giant quadrupole resonance in <math xmlns="http://www.w3.org/1998/Math/MathML"><mmultiscripts><mi mathvariant="normal">O</mi><mprescripts></mprescripts><none></none><mn>16</mn></mmultiscripts></math>

Mitsuru Tohyama

doi:10.1103/PhysRevC.106.L011302

Letter

Extended random-phase-approximation study of the fragmentation of the giant quadrupole resonance in ${}^{16}O$

Mitsuru Tohyama ^*

Faculty of Medicine, Kyorin University, Mitaka, Tokyo 181-8611, Japan

^*tohyama@ks.kyorin-u.ac.jp

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Phys. Rev. C 106, L011302 – Published 13 July, 2022

DOI: https://doi.org/10.1103/PhysRevC.106.L011302

Abstract

The damping of isoscalar giant quadrupole resonance in ${}^{16}O$ 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.

Physical Review C

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Extended random-phase-approximation study of the fragmentation of the giant quadrupole resonance in ${}^{16}O$

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Extended random-phase-approximation study of the fragmentation of the giant quadrupole resonance in O16

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Extended random-phase-approximation study of the fragmentation of the giant quadrupole resonance in ${}^{16}O$