Dipole resonances in oxygen isotopes in time-dependent density-matrix theory

Details Dipole resonances in oxygen isotopes in time-dependent density-matrix theory Dipole resonances in oxygen isotopes in time-dependent density-matrix theory

2001-04-20

arxiv.org/abs/nucl-th/0104060v3

Phys.Lett. B516 (2001) 415-420

Physics

Nuclear Physics

Nuclear Theory

7 pages, 6 figures

Scientific paper

10.1016/S0370-2693(01)00925-X

The strength functions of isovector dipole resonances in the even oxygen isotopes $^{18\sim24}$O are calculated by using an extended version of the time-dependent Hartree-Fock theory known as the time-dependent density-matrix theory (TDDM). The results are compared with recent experimental data and also with a shell-model calculation. It is found that the observed isotope dependence of low-lying dipole strength is reproduced in TDDM when the strength of the residual interaction is properly chosen. It is also found that there is a difference between the TDDM prediction and the shell-model calculation for $^{24}$O.

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