The Role of Ground State Correlations in the Single-Particle Strength of Odd Nuclei with Pairing

Details The Role of Ground State Correlations in the Single-Particle Strength of Odd Nuclei with Pairing The Role of Ground State Correlations in the Single-Particle Strength of Odd Nuclei with Pairing

2000-06-14

arxiv.org/abs/nucl-th/0006024v1

Phys.Lett. B459 (1999) 423-430

Physics

Nuclear Physics

Nuclear Theory

11 pages

Scientific paper

10.1016/S0370-2693(99)00719-4

A method based on the consistent use of the Green function formalism has been developed to calculate the distribution of the single-particle strength in odd nuclei with pairing. The method takes into account the quasiparticle-phonon interaction, ground state correlations and a "refinement" of phenomenological single-particle energies and pairing gap values from the quasiparticle-phonon interaction under consideration. The calculations for 121Sn and 119Sn that were performed in the quasiparticle$\otimes$phonon approximation, have shown a reasonable agreement with experiment. The ground state correlations play a noticeable role and mostly improve the agreement with experiment or shift the results to the right direction.

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