Structure of the doubly magic nuclei Pb and Pb from ab initio computations
Francesca Bonaiti🇺🇸 · Gaute Hagen🇺🇸 · Thomas Papenbrock🇺🇸
Theoretical studies indicate that the superheavy neutron-rich nucleus Pb is doubly magic and at the neutron drip line. While its density distributions and single-particle energies have been computed, the structure of this nucleus is yet unknown. We perform ab initio computations of Pb using an interaction from an effective field theory of quantum chromodynamics tuned only on properties of nuclei with . We validate our theoretical framework by computing the first and excited states of Pb, finding agreement with experimental data. We confirm that Pb is doubly magic and show that its state, located below the state, exhibits an excitation gap of 2.6 MeV with respect to the ground state. Our calculations also suggest that this nucleus is at the neutron drip line.