Coupled-cluster theory for strong entanglement in nuclei

Atomic nuclei can exhibit shape coexistence and multi-reference physics that enters in their ground states, to accurately capture the ensuing correlations entanglement is challenging. We address this problem by applying single-reference coupled-cluster theory based on spherical deformed reference states tailored method. The latter combines configuration interaction static with for dynamic correlations. compute atomic $^{12}$C, $^{28}$Si, $^{56}$Ni find method approach a Hartree-Fock state yield most accurate results.