Continuum QRPA in the coordinate space representation

Details Continuum QRPA in the coordinate space representation Continuum QRPA in the coordinate space representation

2001-02-17

arxiv.org/abs/nucl-th/0102042v1

Nucl.Phys. A695 (2001) 82-94

Physics

Nuclear Physics

Nuclear Theory

RevTex, 21 pages, 10 eps figures

Scientific paper

10.1016/S0375-9474(01)01122-8

We formulate a quasi-particle random phase approximation (QRPA) in the coordinate space representation. This model is a natural extension of the RPA model of Shlomo and Bertsch to open-shell nuclei in order to take into account pairing correlations together with the coupling to the continuum. We apply it to the $^{120}$Sn nucleus and show that low-lying excitation modes are significantly influenced by the pairing effects although the effects are marginal in the giant resonance region. The dependence of the pairing effect on the parity of low-lying collective mode is also discussed.

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