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Spin-isospin Response in Finite Nuclei from an Extended Skyrme Interaction

Abstract : The magnetic dipole (M1) and the Gamow-Teller (GT) excitations of finite nuclei have been studied in a fully self-consistent Hartree-Fock (HF) plus random phase approximation (RPA) approach by using a Skyrme energy density functional with spin and spin-isospin densities. To this end, we adopt the extended SLy5st interaction which includes spin-density dependent terms and stabilize nuclear matter with respect to spin instabilities. The effect of the spin-density dependent terms is examined in both the mean field and the spin-flip excited state calculations. The numerical results show that those terms give appreciable repulsive contributions to the M1 and GT response functions of finite nuclei.
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Contributor : Sylvie Flores <>
Submitted on : Wednesday, February 12, 2014 - 3:54:20 PM
Last modification on : Tuesday, November 19, 2019 - 2:37:42 AM

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Peiwei Wen, Li-Gang Cao, J. Margueron, H. Sagawa. Spin-isospin Response in Finite Nuclei from an Extended Skyrme Interaction. Physical Review C, American Physical Society, 2014, 89, pp.044311. ⟨10.1103/PhysRevC.89.044311⟩. ⟨in2p3-00945610⟩

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