Nuclear structure within a discrete nonorthogonal shell model approach: New frontiers

We present developments and applications for the diagonalization of shell-model Hamiltonians in a discrete nonorthogonal basis. The method, and its actual numerical implementation carina, based on mean-field and beyond-mean-field techniques, has already been applied in previous studies and is focused on basis states selection optimization. The method is benchmarked against a full set of $sd$ shell exact diagonalizations, and is applied for the first time to the heavy deformed ²⁵⁴No nucleus.