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Continuum quasiparticle random phase approximation and the time dependent Hartree-Fock-Bogoliubov approach

E. Khan·N. Sandulescu·M. Grasso·Nguyen Van Giai
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Abstract

Quadrupole excitations of neutron-rich nuclei are analyzed by using the linear response method in the Quasiparticle Random Phase Approximation (QRPA). The QRPA response is derived starting from the time-dependent Hartree-Fock-Bogoliubov (HFB) equations. The residual interaction between the quasiparticles is determined consistently from the two-body force used in the HFB equations, and the continuum coupling is treated exactly. Calculations are done for the neutron-rich oxygen isotopes. It is found that pairing correlations affect the low-lying states, and that a full treatment of the continuum can change the structure of the states in the giant resonance region.

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E. Khan, N. Sandulescu, M. Grasso, Nguyen Van Giai. 2002-06-07. Continuum quasiparticle random phase approximation and the time dependent Hartree-Fock-Bogoliubov approach. https://doi.org/10.1103/physrevc.66.024309

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