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Finite-range simple effective interaction including tensor terms
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An existing parametrization of the simple effective interaction (SEI) that is able to reproduce the experimentally known crossing between the 2𝑝3/2 and 1𝑓5/2 single-particle (s.p.) proton levels in neutron-rich Ni isotopes has been generalized. We have added a short-range tensor force in order to describe the observed gaps between the 1ℎ11/2 and 1𝑔7/2s.p. proton levels in the Sn isotopic chain and between the 1𝑖13/2 and 1ℎ9/2s.p. neutron levels in 𝑁=82 isotones without compromising the good agreement with the splittings in the Ni isotopes. Different scenarios where tensor effects are relevant are considered with the new interaction and its predictions are compared with results from other mean-field models and experimental data where available.
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BANO, P., et al. Finite-range simple effective interaction including tensor terms. Physical Review C. 2022. Vol. 106, num. 2. ISSN 2469-9985. [consulted: 11 of October of 2026]. Available at: https://hdl.handle.net/2445/215266