Effect of tensor correlations on Gamow–Teller states in 90Zr and 208Pb

2008/11/30 by C. L. Bai, H. Sagawa, H.Q. Zhang +5 · 2 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th

paper · pdf · doi:10.1016/j.physletb.2009.03.077

published as Phys.Lett.B675:28-31,2009 · 13 pages, 2 figures,2 tables

arxiv created 2009/02/24 · openalex publication_date 2009/04/06 · arxiv updated 2011/03/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

Abstract

The tensor terms of the Skyrme effective interaction are included in the self-consistent Hartree-Fock plus Random Phase Approximation (HF+RPA) model. The Gamow-Teller (GT) strength function of 90Zr and 208Pb are calculated with and without the tensor terms. The main peaks are moved downwards by about 2 MeV when including the tensor contribution. About 10% of the non-energy weighted sum rule is shifted to the excitation energy region above 30 MeV by the RPA tensor correlations. The contribution of the tensor terms to the energy weighted sum rule is given analytically, and compared to the outcome of RPA.

Citations

• Mean Field with Tensor Force and Shell Structure of Exotic Nuclei
• Evolution of Nuclear Shells due to the Tensor Force
• New Magic Number,N<mml:mspace/>=<mml:mspace/>16, near the Neutron Drip Line

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