Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-05-24
Phys.Rev.C83:064306,2011
Physics
Nuclear Physics
Nuclear Theory
18 pages, 14 figures, 3 tables
Scientific paper
10.1103/PhysRevC.83.064306
We present a study of the effects of the tensor-isospin term of the effective interaction in Hartree-Fock and Random Phase Approximation calculations. We used finite-range forces of Gogny type, and we added to them a tensor-isospin term which behaves, at large internucleonic distances, as the analogous term of the microscopic interactions. The strength of this tensor force has been chosen to reproduce the experimental energy of the lowest 0$^-$ excited state in $^{16}$O, which shows large sensitivity to this term of the interaction. With these finite-range interactions, we have studied the effects of the tensor-isospin force in ground and excited states of carbon, oxygen, calcium, nickel, zirconium, tin and lead isotopes. Our results show that the tensor force affects mainly the nucleon single particle energies. However, we found some interesting cases where also bulk nuclear properties are sensitive to the tensor interaction.
Anguiano Marcelino
Co' Giampaolo
Donno Viviana de
Lallena Antonio M.
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