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Gogny interactions with tensor terms

Abstract : We present a perturbative approach to include tensor terms in the Gogny interaction. We do not change the values of the usual parameterisations, with the only exception of the spin-orbit term, and we add tensor terms whose only free parameters are the strengths of the interactions. We identify observables sensitive to the presence of the tensor force in Hartree-Fock, Hartree-Fock-Bogoliubov and random phase approximation calculations. We show the need of including two tensor contributions, at least: a pure tensor term and a tensor-isospin term. We show results relevant for the inclusion of the tensor term for single-particle energies, charge-conserving magnetic excitations and Gamow-Teller excitations.
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Contributor : Sophie Heurteau Connect in order to contact the contributor
Submitted on : Wednesday, August 24, 2016 - 10:58:03 AM
Last modification on : Friday, April 30, 2021 - 10:22:15 AM




M. Anguiano, A. M. Lallena, G. Co’, V. de Donno, M. Grasso, et al.. Gogny interactions with tensor terms. European Physical Journal A, EDP Sciences, 2016, 52 (7), pp.183. ⟨10.1140/epja/i2016-16183-1⟩. ⟨in2p3-01355755⟩



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