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Pairing properties in relativistic mean field models obtained from effective field theory
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We apply recently developed effective field theory nuclear models in mean field approximation (parameter sets G1 and G2) to describe ground-state properties of nuclei from the valley of $\beta$-stability up to the drip lines. For faster calculations of open-shell nuclei we employ a modified BCS approach which takes into account quasi-bound levels owing to their centrifugal barrier, with a constant pairing strength. We test this simple prescription by comparing with available Hartree-plus-Bogoliubov results. Using the new effective parameter sets we then compute separation energies, density distributions and spin--orbit potentials in isotopic (isotonic) chains of nuclei with magic neutron (proton) numbers. The new forces describe the experimental systematics similarly to conventional non-linear $\sigma-\omega$ relativistic force parameters like NL3.
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ESTAL, Manuel del, et al. Pairing properties in relativistic mean field models obtained from effective field theory. Physical Review C. 2001. Vol. 63, num. 4, pags. 044321-1-044321-14. ISSN 0556-2813. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/10988