Effect of Tensor Correlations on Gamow-Teller States in 90Zr and 208Pb

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.

13 pages, 2 figures,2 tables

References in corpus (5)

• The tensor part of the Skyrme energy density functional. I. Spherical nuclei
• Spin-orbit splitting and the tensor component of the Skyrme interaction
• Tensor interaction contributions to single-particle energies
• Evolution of nuclear shells with the Skyrme density dependent interaction
• Spin-isospin nuclear response using the existing microscopic Skyrme functionals

Cited by in corpus (36)

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• The Nuclear Tensor Interaction in Covariant Energy Density Functional
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• Nuclear response for the Skyrme effective interaction with zero range tensor terms
• Role of T=0 pairing in Gamow-Teller states in N=Z nuclei
• Spin-flip M1 giant resonance as a challenge for Skyrme forces
• Quantitative analysis of tensor effects in the relativistic Hartree-Fock theory
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• Relativistic interpretation on the nature of nuclear tensor force
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• Recent applications of the subtracted second RPA method