A weak entanglement approximation for nuclear structure: Review and recent developments

The nuclear shell model is a useful and widely used tool for nuclear structure, but it can be hampered by the exponential growth of the basis. Draw­ing inspiration from quantum information theory, one can show that the proton and neutron components are typically weakly entangled. This has led to the Pro­ton And Neutron Approximate Shell-model (PANASh). I review the underlying ideas and present recent developments. In particular I show how PANASh can accelerate beyond-mean-field methods such as the generator coordinate method.